Amazfit GTS 2 NE Lightweight and extended battery life: The Amazfit GTS 2 NE smart watch features a sophisticated circuit design, a thin body and a high capacity battery that lasts up to 24 days of typical use. 24-hour heart rate monitoring: The BioTracker 2 optical sensor enables 24-hour heart rate monitoring, covers heart rate zones and warns of abnormally elevated resting heart rate. SpO2 measurement: The GTS 2 NE Fitness Tracker measures your SpO2 level to get a better understanding of your physical condition during mental or physical exertion. Sleep quality monitoring: The GTS 2 NE sports watch offers in-depth sleep monitoring, distinguishes between light and REM sleep, monitors sleep breathing and offers suggestions for improvement based on sleep analyses. 90 integrated sports modes: After completing a sports mode, the watch creates an analysis report to improve your training plan. Thanks to intelligent recognition, the sport mode does not have to be selected manually. Free your hands: With the offline voice control function, you can perform voice commands such as switching on sport mode or opening heart rate monitoring without internet access.