Amazfit GTR 2 New Version brings a couple of changes to the standard GTR 2. It features an aluminum alloy body while the GTR 2 was also available in stainless steel finish. Other than this, the New Version has negligibly different dimensions, weight, and rated battery life as well. Anyway, this watch has a circular 1.39-inch AMOLED screen. Its optical PPG sensor is capable of 24-hours heart-rate monitoring. Other health tracking features include blood oxygen saturation (SpO2 level), Personal Activity Intelligence (PAI), and deep sleep monitoring. It has 90 different sports modes and an integrated GPS module for high precision tracking. It also has a built-in speaker and microphone for Bluetooth calls as well as 3GB storage for locally storing music files.