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Techmoan Merchandise at TeeSpring


Pick of the Camera Reviews

(Click the pictures for reviews & links) 


Yi 2 - Best Budget 4K 

Gitup Git2 (My Pick)

Xiaomi Yi

Dazzne P2

DR02 D - Best Budget Dual Cam

Yi Ultra 2.7K
Mobius (also works as a Dashcam)
Polaroid Cube+
Sena Prism Tube

My favourite USB battery power Pack

This is the excellent USB power pack I use when I travel.

2 x 2.1amp outputs. 8400mAh capacity.

Two digit Led display shows battery level


What SD CARD should I buy?

If you want an SD Card for your camera - these are the ones I use and recommend. 

I'd strongly recommend not to buy any SD cards off ebay - I've heard about too many issues with counterfeit cards - often sold on by unwitting resellers. My inbox regularly gets messages from people who bought a £150 camera then cheaped out and bought a £3 memory card on ebay - Then when it doesn't worth they blame the camera! It doesn't make any sense. Good memory is cheaper than it's ever been - see the links above.

A lot of HD cameras will not work properly with cards larger than 32GB (cards over 32GB are usually SDXC rather than the SDHC standard used by 32GB cards. SDXC cards use the ex-FAT system rather than FAT32 - in short they are a different standard). - so don't just buy the biggest card you can afford - read the specs in the manual to see what it accepts.


RECOMMENDED CARDS (for action cams - see dashcams below)

CLASS 10 UHS-1 CARDS (For HD Cameras)


U3 CARD (For 4K cameras)




The SD card in a dashcam is re-written over, more frequently than in other types of cameras. Some manufacturers void their guarantee if an SD card was used in a dashcam. So, no surprise, there are special High Endurance SD cards made just for's some.


VERY IMPORTANT. These links take you to the product, however Amazon have three different ways of selling. There's Amazon Direct - This means that you are only dealing with Amazon themselves, then there's other sellers that use Amazon's facilities - these show as Fulfilled By Amazon and finally there's Market Place sellers that advertise on Amazon, but operate independently.  I strongly recommend that you only use the first...the Amazon Direct - Sold By Amazon option. Even if it appears that you are paying a couple of £/$ more it is more than likely you are comparing the price of a real item against the price of a fake.

To give you an idea of the extent of the fake goods problem. In a 2016 survey by Apple - 90% of the 'Apple' chargers sold through Amazon - using the other the two methods..which includes the "Fulfilled by Amazon" option -  were found to be counterfeit....90%! 


« Belkin CarAudio Connect AUX with Bluetooth | Main | Liquid Image Ego Review - Part 2 »

A Car DVR with a wired rear camera

My Car DVR reviews seem to be quite popular, so I thought it was time to do another one. It takes something a bit different to get my attention with so many similar car cams available. This model does have the interesting feature of an additional wired rearview camera. The fact that the camera is compact and pretty cheap also counts in its favour.  

I hijack the beginning of the video review to explain why it’s really not possible for me to answer the (hundreds) of email requests I receive asking me to recommend a specific ‘best’ car camera. This will also apply in relation to the similar requests I often get regarding action cams. 

I really can’t tell people what camera to buy, any more than a car magazine would try and tell you what car you should drive. These reviews are produced only to help people to formulate a decision based upon their own very specific personal requirements. Please also bear in mind that everything I test is only used for a short period of time, I have no idea about the long term reliability of any of the products I review. 

Overall though, this seems to me like a pretty decent camera for the price, despite one or two relatively minor niggles. I paid approximately £50 for mine from this seller on eBay who despatched from the UK. If you want an up-to-date list of auctions, you can click This Link which will perform a search on eBay UK for you.

Some of the other eBay sellers stock a grey coloured model and some also come with a different style of adjustable rear camera. 

I have also found it for sale on DX.COM where it seems to be supplied with an additional suction cup mount

As always there seem to be a few variations of this camera around - so take a close look at any example screenshots shown in any adverts. The menus in mine appear as a bar along the bottom of the screen.  Here's an example of one where the OSD looks completely different, and I have no idea how this one performs (It also comes without the rear camera).


Download four clips here - Front & Back, Day & Night.

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Reader Comments (493)

OK more testing - it seems the car 12v to 5V lighter psu was faulty - finally got it charging - it needs 5v @ 1500mA to work and charge - most usb mains adaptors are 500mA or 1000mA

so all ok now!

January 20, 2013 | Unregistered Commentermatt uk

I'm sorry to pour scorn onto your review but you missed the two bad design faults with this device which are consistant to every one ever made (our having tried three).

1) The recording of the rear camera, when played back on any media player except the device it's self, pixcelates in a flashing manner once a second making it pretty/ almost useless for evidence.

Also: The rear image on some of these is reversed as the video out is designed to go into a reversing display i.e. it is a dvr with reversing camera in some instances. Hence the output lead being jack to jack for an LCD mirror type monitor.


2) Either the batteries or 12v supply on these are faulty or incorrect so that, very soon, the battery has no charge and, when the ignition goes off, the camera turns off instantly and the current file is not saved (no matter how long you set it to record for after ignition off). Also, for that reason, if you stall the camera may not restart. The unit works fine for a bit when charged over night from a PC USB but adter a day's use the battery has no charge again.


We have tried 3 of them and found them all the same. Also the same issues are evident on other cameras which may look different but use the same operating system identifiable by the display graphics as on your video.
Or put another way: Any car DVR which shows the Green 3 bar graphic choice when connected to a PC will have the rear recording playback issue.

Best regards,

Ted Eyers

January 20, 2013 | Unregistered CommenterTed

Thanks for the info Ted.
I have just tried my unit with the rear camera connected and made some recordings.
I am pleased to report that the image is the correct way round on the rear camera and not the mirror image you have experienced.
Also, I played back the recordings from the rear camera on my imac using Quicktime Player and the image was good with no pixelation, flashing, or stuttering.
It's too late to test in the car with the in car power supply but I will try to test it tomorrow and report back.
Perhaps the latest firmware has addressed the problems you are experiencing.
My firmware version is 20121217


January 21, 2013 | Unregistered Commentertony2

Hi again.

Ok, here is what I did.......

Firstly, I discharged the battery to the point that the camera shut itself down and the battery indicator was showing zero, then fixed it to the car windscreen and plugged in the In Car charger, started the car and the camera turned on and started to record.
Went out for a test run lasting approx 30 minutes, turned car off and the camera shut itself down approx 20 seconds later.
Went indoors and turned on the camera on battery power and the indicator was showing 1/3 charged so, it looks like it is all working as it should. Wether it continues to behave itself only time will tell.
Played back all the recorded files on my imac using Quicktime player and all was fine.
As said in my last post, perhaps things have been fixed with the latest firmware update.
What firmware is your camera running Ted ?


January 21, 2013 | Unregistered Commentertony2

make sure u use the supplied charger - that cam needs 1500mA to work and charge properly - most others only go up to 1000mA

THIS IS THE BIGGEST MISTAKE MOST PPL MAKE WITH THIS CAM - they use a smaller neater lighter charger

January 21, 2013 | Unregistered Commentermatt uk

well, got the cam a few days ago, testing to check that everything is OK before I'll leave a positive feedback to the seller.
so far i encountered 1 issue i don't understand. i set the cam to loop every 5 min., during one of my trips i pressed the triangle button (long press) to test the lock feature of the camera where it saves this file to a different folder. when i got home i expected to see under "LOCKED" folder a 5 min. video file. what i actually had is a 30 sec. clip starting from the moment i pressed the button.
this is no good since if it was an accident it didn't save the accident but saved a video file after the accident has happened.

anyone else encountered this? any insight? what happens when you press the triangle buttons?
i have firmware 20121217.

January 24, 2013 | Unregistered CommenterAdi

Here are the results of some testing I've undertaken.

When the 'Auto Record' setting is set as "On" the unit will record indefinitely indefinitely (auto start/stop) but the battery will not be charged while in use. So when the ignition is switched off there's a high chance the camera will simply die as the battery is flat. So you'll loose the recording that was in progress when the camera died.

With the 'Auto Record' set as "Charge Video" the unit will record (auto start/stop) until the battery becomes fully charged, at that point the camera will shutdown regardless whether there's a 12v supply. At this point you have to manually switch the camera on again.

Great camera but this charging issue is annoying!

January 24, 2013 | Unregistered CommenterDervMan

this is not the same in my case. i set the 'Auto Record' to 'Charge Video'. when i open the car switch the camera powers on and starts to record until i turn of the car switch. it doesn't switch off when battery is full.

what is your firmware version? maybe try to reset settings to default from the camera menu. are you sure it was the camera shutting down and not only the screen? did you set the screen to be on all the time?

January 24, 2013 | Unregistered CommenterAdi

Hi Adi,

Thanks for the reply. The screen is set to turn off after 1 minute. I left it recording while I was at work, when I got home the three LED's were off so I was confident the unit had switched off. The videos (5 minute sections) backed this up, the last recording was created at 10:04 AM. The card was 20% full.

I don't have the camera in front of me so can't check the firmware, I'll check and post back.


January 24, 2013 | Unregistered CommenterDervMan

Regarding my previous post about the 30 sec. video clip created when pressing the 'Triangle' button. now i see how it works, when you press the 'Triangle' button, the camera saves a 30 sec. video clip under the 'Locked' folder. this video clip consist of 10 sec. before you pressed the 'Triangle' button plus 20 sec. more, so its 30 sec. all in all. but what will happen if im involved in a car accident, lets say it will take me 30 sec. to press the 'Triangle' button, what will happen is that the file under 'Locked' folder wont contain the actual accident, only what happened after.

actually, i just noticed this is written in the cam user manual (stupid me :)), but still, it's kinda annoying, but i can live with it.

January 24, 2013 | Unregistered CommenterAdi

Hi Adi.
The Camera is fitted with a G-Sensor which can be set for sensitivity in the menu's.
If you are involved in a collision the G-Sensor will activate and save the file automatically, that's the theory anyway.
So, you wouldn't need to press the emergency triangle button yourself. I think it's there so if you see something of interest you can manually save it.
I have mine set to Medium and tried it by giving the camera a tap whilst recording, the padlock symbol appeared at the bottom of the screen to show it had saved the file.
Hope this helps......Tony.

January 24, 2013 | Unregistered Commentertony2

Hi tony2,
yep, im aware to the G sensor feature, i don't want to use it so i won't get false positive video files. still, the G sensor save the video file the same way as the manual 'Triangle' button.

anyway, i can live with it, i got a 16 GB sd card so even if i don't press the 'Triangle' button, video files will be saved for a few hours.


January 24, 2013 | Unregistered CommenterAdi

Hey Adi,

Mine is running version


January 24, 2013 | Unregistered CommenterDervMan

Hi DervMan,
try to set all configurations to default values, there's an options to reset in the menu. change only 12 configuration2 after, the one that turn off the screen, set it to not turn the screen off and the one that says "Charge Video".

connect the camera to your car, is it still shutting down when battery is fully charged?

January 26, 2013 | Unregistered CommenterAdi

I seem to be having the same trouble as others. The front camera is a gem but the rear camera shows everything in reverse albeit relatively clear. But in a tail ender the display if next to useless. Any help for a an oldie would be appreciated. Am I missing something in the confusing instruction manual. (There's a job out there for someone to offer to correct copy for these people :p )

January 27, 2013 | Unregistered CommenterSnow

Hi Snow,
you mean the problem that when you record text using the back camera it shows a mirror image?
what is your firmware version?

January 27, 2013 | Unregistered CommenterAdi

Hi, I have finally received a replacement camera back from HK having sent the old one back due to the green noise bars problem.

The new camera has a much later firmware revision, (2012121) 1 12 2012 also has what seems improved menu, date display etc as mentioned recently on here.
The actual camera seems to be fine however.... it doesn't seem to recognise the rear camera.
When I returned the old camera I retained the original cabling, rear camera etc which was agreed, the returned new camera is just the camera. I'm just wondering if the later cameras have the same rear camera as I originally had, this is one that can be swivelled and has IR lights fitted as well. Can anyone tell me if the later cameras come with fixed mount rear camera or swivel. If someone has a fixed mount one can you tell me how many sections are on the 2.5mm jack that goes into the main camera, my original has four sections, I'm thinking if the later cameras have only two then this could be the problem ?

Any thoughts.


January 28, 2013 | Unregistered CommenterCharmin

Adi thanks for your response. Checking my firmware shows it to be 201212211... way below what others are reporting. And as the Romans once said.. "Quo Vadis???"

January 28, 2013 | Unregistered CommenterSnow

Hi Charmin,

Received my camera a couple of weeks ago and it has the swivel type rear camera.

Firmware is 20121217. Hope this helps.

January 28, 2013 | Unregistered Commentertony2

Checked the plug on the rear swivel type camera and it has 3 sections.

Looked back at Techmoans review and his fixed type rear camera plug also has 3 sections.

Are you sure you have 4 sections ?

January 28, 2013 | Unregistered Commentertony2

Mine ver is 20120519 should I uphgrade it? Ty

January 28, 2013 | Unregistered Commenterkier

Hi Tony2, your right, just went and checked myself, three sections... and checked Tecmoan video as well, three sections, so I'm going to go check the join connector at the back of the car, it is possible it has come loose, Job for tomorrow but will post outcome on here. I don't think I can stand sending this one back as well... took weeks and weks to get replacement.

One other question, this cam has a battery charge option in the menu ? under the auto option... any idea?


January 28, 2013 | Unregistered CommenterCharmin

Hi Charmin,

When I first had mine it would not charge when connected to the car power supply, so this is what I did to correct it.

Go to the Auto Record menu where there are three options, OFF, ON, and CHARGE VIDEO.

Select the CHARGE VIDEO option, it will then charge ok.

I hope I have understood your question correctly.


January 28, 2013 | Unregistered Commentertony2

AFAIK there is currently no instructions on how to upgrade the camera or from where to download the firmware.

verify you attache both wires of the back camera correctly, only 1 direction will work, there should be an "Arrow" sign on both cables that indicate the correct join.

You are not the only one with this mirror image issue. run a search on the word 'mirror' on page 3 & 4 and you'll get posts and solutions from other people who encountered this problem

here are some images from my car installation:

January 29, 2013 | Unregistered CommenterAdi

Bought this cam, the black and silver version from a UK seller.
Have had a few niggles with it, hopefully someone can give me some advice.

How to I set it to loop record i.e when the micro sd has reached its capacity, it will start overwriting from the earliest first. Currently once it fills the card it says CARD FULL and then turns off.
Secondly, I used the supplied car charger to begin with. What would happen is it would start recording as normal, then the middle red light would cut out after around 1-2 minutes and then the dvr would just cut out corrupting all the data in the process.
I have swapped to my own USB plugged into a cigarette adapter and now it is recording 10 minute segments however when I stop the car and turn off the engine it does not turn off automatically. And if I press the REC button and then turn off the last video file wont play.

Ive found this item has the potential but is extremely tempermental and the instructions provided are laughable.

If someone could explain what the 3 below settings mean in plain English and what they should be set to if I want it to overwrite early data and turn off once the engine is shut off it would be greatly appreciated.

RT 1min 3min 5min OFF.
Auto record OFF, ON, Charge Video.
Shut Down time 1min 3min 5min OFF

January 29, 2013 | Unregistered CommenterJohnK

Hi JohnK ,
Regarding the 3 settings:

RT 1min 3min 5min OFF = this setting is for how long to create the video file and create a new one. for example, if you choose 5, a 5 min. video file will be created, after 5 min a new video file will be created. select value 1, 3, or 5.

Auto record OFF, ON, Charge Video = Put this on 'Charge Video' to make the camera start recording when it is connected to a power supply.

Shut Down time 1min 3min 5min OFF = i think this is for how long to keep the screen on. if you set it to 1, after 1 min. the screen will turn off but camera will continue to record.

if you shut down the camera while it is recording, the last file will be corrupted because the camera didn't had the time to save it properly. on my camera, when i turn my ignition off, the camera stays on for about 10 sec. (probably saving the video file) and then shuts down. last video file plays correctly.

January 29, 2013 | Unregistered CommenterAdi

Hi JohnK,

You're card is filling up because the video isn't being recorded in 'chunks'. You need to set the record time (RT) ti something other than 'OFF'!

January 29, 2013 | Unregistered CommenterDervMan

tony2 - adi
Tried the rear camera connector to check it was OK and it is connected correctly, re-set the camera and tried all again but definitly no rear camera working, everything else is fine.
There is one thing that could be a concern but I'm hoping not... when I connected the new replacement camera in place I think I might have connected the rear cam jack plug into the AV out socket momentarily, problem is the camera and all the wiring are fixed in place at the very top of the wind screen, tucked just above the rear view mirror, reasonably easy to get in and out but not easy to see.
Has anyone done a similar thing and not had a problem..... ? I'm doubting that is the cause as a video out signal is very low level voltage, micro volts in fact. I'm just stuck as is it a problem with the new replacement cam or what...?

Any thoughts.


January 29, 2013 | Unregistered CommenterCharmin

Ali, with thanks...


The following are extracts from my communication with the seller:

VENDOR: vickypaypal

After my initial complaint:
No worry,we did offer this warranty for this item!
So,could you kindly to send us a photo to show this problem?

My response:
You ask for a photo of the problem, this I find unusual, for the problem can only be see when trying to play the view taken from the rear camera. I hope you can understand what I am trying to explain, and I have checked with other users on the internet and find that their Firmware is of a later version and works properly. Maybe the camera supplied was of earlier stock by mistake.

Please wait us for few hours,we will have a test my stock,and back to you later,thanks!

Ali thanks for the information and your photos of your product where I notice that the item is contained in an exact carton as mine in all details.

I'll post you of the outcome. By the way I bought this unit following a dear lady ignoring my reversing lights as I was reversing she was driving a small BMW sports and out of line of my mirrors and so costing me a repair bill for her vehicle and not a mark on mine for she hung off my tow ball. Thats life :p

January 29, 2013 | Unregistered CommenterSnow

Hi Charmin,
Can't help on that one i'm afraid, don't know much about electronics. I suppose it could be possible that the video out signal has damaged the image sensor in your rear camera but, I don't know for sure. Hopefully someone on here will have some knowledge on this.
Can you get your hands on another known working camera with the same connector ( example a reversing camera )to rule this out perhaps ?
On my own unit as soon as I plug in the rear camera the picture in picture comes up on the screen automatically.
Sorry I can't be of anymore help but I hope you get it sorted.

January 30, 2013 | Unregistered Commentertony2

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