It's not the most hackable, but there are some dedicated folks hacking at the Amazfit watches. I have the original Bip, which has a ridiculous battery life (30+

It's not the most hackable, but there are some dedicated folks hacking at the Amazfit watches. I have the original Bip, which has a ridiculous battery life (30+ days easily) and GPS. The GPS will run your battery down with extensive use, but if I'm running a few times a week it'll still go 2 weeks. It isn't that powerful, and I wish it had a second physical button. I haven't explored the mods very much because it does what I need it to do, but the scene has the feel of the early Xbox hacking scene, to me at least. There's this watch which appears to be heavily inspired from the Amazfit Bip: https://www.kickstarter.com/projects/gfw/banglejs-2-the-open-smart-watch https://www.kickstarter.com/projects/gfw/banglejs-2-the-open...