Good review of the Amazfit Cor. It’s in Italian so use Google Translate to read.
The amazing Amazfit Bip can be yours for just $70. Source: The best cheap smartwatch: now even cheaper
Participants of the Amazfit Stratos beta platform have received firmware 126.96.36.199 for testing. The new update fixes GPS accuracy & heart rate sensor issues. Source: Amazfit Stratos firmware update 188.8.131.52 solves GPS & heart rate problems