comradekingu
Glowing ember
AsteroidOS is great There is even an app for it on F-droid.
Although I'm not sure it ever came out...
http://www.gabotronics.com/oscilloscopes/oscilloscope-watch.htm
Just get yourself an solar Casio G-Shock, it is way more fasionable and functional.
To get an idea of how cheaply these can be built - here's a watch with phone function - for 6 euro
https://www.gearbest.com/cell-phones/pp_28981.html
Edit: I expect these are clearance prices, as too many regions seem to be dropping GSM. I think the original prices were around $25-30
TBH, outside of using my Garmin for running, I liked that it was programmable, so I could put birthdays on the watch face; and then Garmin did some updates and broke my watch face and my apps, and I could never be bothered developing for it since. Still use it as a watch though, because it is actually quite nice, and looks professional, and it does have a great battery life
[doublepost=1506280877,1506280668][/doublepost]Wow, that U8 phone... dirt cheap, and works as a standalone phone. I'm half tempted to try it for a fiver!