A popular series of low-cost smartwatches by Xiaomi/Huami. Specifications are quite competitive for the price, but most watches, especially older generations, are based on the Ingenic M200s platform, which is 32-bit MIPS and therefore currently (and probably never) supported by postmarketOS. AsteroidOS is, however, seemingly considering adding support to the platform.
More recent models (Nexo etc.) use the Qualcomm Snapdragon Wear 2500 platform, which is much more common and potentially supported.
- Kernel (3.10.14): https://github.com/amazfitDev/platform_kernel-3.10.14
- AsteroidOS issue: https://github.com/AsteroidOS/asteroid/issues/71