Comment by system2
I respect these developers spending months and months to do something really not necessary and just for fun. I doubt they would make millions selling this so it is purely for their entertainment. I hope to find a hobby project to dedicate myself like these people one day.
Well I absolutely needed this watch. It's a world class watch, it's hackable, it's cheap, it doesn't phone home, battery lasts over a year, LCD visible is always high.
It's actually the only watch with all the features I want. It's got a pulsometer built in and I added a calibration feature to let the user set the scale. As far as I know it's the only watch to ever allow this. Use it every day at work.