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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%! 


« Music to watch Oscilloscopes by | Main | LaMetric Time - WiFi App Enabled Smart Clock »

HP-01 In 1977 HP invented The Best Watch Ever*

I’m a middle aged man. At least I am if I live to be in my 90s. I do middle aged man things, like go on cruises for my holidays. In truth, it's the only way I can get abroad since I’m no longer able to use air travel (health, not terrorism related). There’s a weird aura that permeates cruise ships, it’s a presumption that the passengers are wealthy. There’s always a high end jewellers shop on board selling watches that cost thousands of pounds, the ships dock in towns where every other shop sells luxury jewellery and watches to accommodate these deep pocketed visitors.  I’ve never understood why things are this way, it all seems like theatre to boost the ego rather than an accurate reflection of reality, as the average cruise ship passenger is anything but wealthy. When you work out the cost per day including meals, a cruise is often as cheap if not cheaper than going to a mid range hotel in Mallorca. 
Anyway I digress, the reason I mention this is that years of looking in the windows of expensive jewellers (often just to kill time) has programmed into me a desire to own a quality watch. I’ve been obsessed by timepieces all my life, however when I do kick the bucket, there’s no Rolex to bequeath in a will, but there’s plenty of Casios for someone to put in the bin. 
I recently decided that I owe it to myself to own one quality timepiece in my life. However I soon realised that none of the watches I could afford appealed to me. If I’m spending serious money then it has to be something that I would really cherish. 
So after looking at watches that cost thousands of pounds but didn’t excite me, I ended up buying a watch that cost a few hundred pounds, but one that means a lot more to me than just the money. The Hewlett Packard HP-01 is a unique and fascinating piece of history. Watch the video below to learn more about this amazing timepiece.
Below are some links you may find useful.
HP-01 watches regularly come up on ebay here
LED Museum (The ultimate HP-01 resource) 
HP's own Journal PDF Magazine Dedicated to the HP-01 
Hodinkee (these are the chaps who suggested it was the first smartwatch - if you disagree, please argue it out with them..I'm merely passing on the info) 
Old Argos Catalogues can be found here
If you like to look at beautiful pictures of LED watches - you'll like this
If you like to talk about digital watches, be sure to visit the Digital Watch Forum 
Please don't write in to inform me the Triangle is a Delta - this video has been made and cannot now be changed. When you hear the word triangle if you want to translate that to Delta, or belly-button, or whatever word you prefer in your head then that's entirely your call. 
*it is as far as I’m concerned. As someone who likes 1970s LED watches, calculator watches, and values technical achievement.... this for me is the BEST WATCH EVER. If you prefer watches that have a waving Mickey Mouse on will probably have your own choice of 'Best Watch Ever'.

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Reader Comments (12)

Hi Matt,

could you also mention our free without advertising super forum about digital watches


November 16, 2016 | Unregistered Commenterkasper

I'm happy to, I've visited the site many times.

November 16, 2016 | Registered CommenterTechmoan

A tech curiosity from the distant past is the Bulova Accutron. The watch was the first to have a quartz timer, but they did not have the miniature electronics at the time to count the pulses from the timer or display the time. The solution was almost unbelievable. They attached a tiny lever to the tiny tuning fork in the quartz timer. That lever spun a gear with an astonishing number of tiny teeth which replaced the flywheel in the otherwise mechanical watch. Sadly you cannot really watch it work as the frequency of a quartz timer is so fast it does not appear to be moving, so maybe there is nothing to do a video on. But it is really amazing they could build a mechanism like that in 1960.

November 17, 2016 | Unregistered CommenterGeorge

How many batteries did you go through while making this video? ;)

November 17, 2016 | Unregistered CommenterChris

I'm pretty sure these ones will last closer to 3 months than 6 months,,,however when they expire I'm going to see how long some really good silver oxide batteries will the moment I've just got some cheap ones I Installed just before the video.

November 17, 2016 | Registered CommenterTechmoan

Well the point about listing the maximum acceptable magnetic field is that this was a huge problem with mechanical watches. If your mechanical watch got even slightly magnetized it will just stop working.

November 18, 2016 | Unregistered CommenterChristian Berger

I still have a fully working Casio AT-552 (around 1:40 in the video) that I bought back in 1985 and I only stopped using in 2012 when I retired from flying. The calculator feature was handy at times for figuring out last minute weight and balance adjustments, unit conversions and how much dinner was in New Caledonian francs.

I'm surprised the screen survived without a mark since the casing has plenty of scratches. In case it ever did fail, I also carried a cheap black 'rubber' button Casio calculator watch in my bag which I bought from Walmart for ~US$15 in about 1990. It was still running on its original battery about 10 years later when a colleague urgently needed to borrow a watch.

November 21, 2016 | Unregistered CommenterPete

Well done on the vid. Very enjoyable and really got to the point.

Always surprised there's not more about on old digital watches. Have you ever looked into the evolution of them? I love the early mechanical digital watches (jump hours).


December 17, 2016 | Unregistered CommenterStephen Cresswell

Hi chap

Typo alert Theatre is spelled RE ;o)

Mike (pedant)

December 25, 2016 | Unregistered CommenterMike L

I've been hunting down a HP-01 for ages and finally found one in good condition that needs only a good cleaning to be near mint.
Thanks for the tips you gave me before (on youtube comments) to be patient and how to have a search stored on ebay.
Thanks again and happy holidays. (And my daughter says greet the muppets)

December 23, 2017 | Unregistered CommenterPeter

Just in time for Christmas too, a great present for yourself. Glad you got one. I managed to get the muppets to stop arguing just long enough to say hi. If you need the scanned manual let me know, I have a copy somewhere (I think).

December 23, 2017 | Registered CommenterTechmoan

If it is possible that would be great, I have searched for the manual allready, but all links are dead.
So if you ever find it again, I would love to get it, I assume you can extract my email adress from this tread?

December 23, 2017 | Unregistered CommenterPeter

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