3D Curved Design and AMOLED HD Display The Amazfit GTR 2 smart watch features a 1.38 inch HD AMOLED display with a pixel density of 326 PPI, covered with 3D glass, which naturally transfers to the stainless steel case, which makes It leads to better visual beauty and a wider viewing area for the content All-round health tracking The Amazfit GTR 2 smart watch can provide 24-hour heart rate monitoring, blood oxygen saturation measurement, sleep quality monitoring, and stress level monitoring. It also includes the PAE HealthMint system, which uses algorithms to convert all health and activity data. complex to a single degree, to help you understand your physical condition at a single glance 90 Sports Modes and (5) ATM Water Resistant The Amazfit GTR 2 sports mode includes 90 built-in sports modes and 50m water resistance Intelligent recognition of 6 sports modes also eliminates the need to manually select sports modes so the watch is always ready for action 14 Days Ultra-Long Battery Life The GTR2 Sport watch is equipped with a powerful 471mAh battery that can last 14 days with normal use