The 1.65 inch Amazfit GTS is one of the latest from Huami released alongside the premium Stratos 3. Its slim and features a very interactive and rich customizable AMOLED display, while also having a very long 14 days battery life which allows you to go long on a single charge, and is well equipped to track your active life with a more improved Huami Biotracker PPG sensor and 6-axis accelerometer in addition to inbuilt GPS.