Hi,
I use this es120 driver every day for several months now and do not regret buying it - very good screwdriver. Nice rotation speed (could be a bit faster) and it is much better than xiaomi wowstick. In fact, xiaomi - is a toy or a present you would never actually use for real work.
Motion detection is very handy if you hold something with your three arms and partly with teeth and have to screw it together at some weird angle. In fact I was curious how would this work when ordered and now I must admit - it is extremely handy - just turn the driver with button pressed the way you want it to screw/unscrew.
I would buy another one, if they finally will sell an aluminium alloy version. Original one is a stainless steel (very nice finish), but I would prefer it to be a bit lighter.
In general - it is the only portable pen-type screwdriver for small work at the moment available. Apart from General Tools one, which is the only alternative (when hacked with li-ion batteries, so it has some reasonable rotation speed or you will fall asleep while using it).
I do repair vaping devices and each one is 4 to 14 small screws, so this screwdriver is a huge time saver.
Not paid by this company (I don't even know, which company makes it).