The watch also incorporates diamond-like carbon (oDLC) coating to provide a more scratch-resistant and wear-resistant screen that greatly enhances the glass quality and lifetime.Choose from a broad range of watch face themes so that you're always in style. Most watch faces have a custom Always-on Display2, so you can see the interface you like whenever and wherever you are.Customize your watch faces with images of your choice, or even your own personal picture.Keep your watch looking stunning and check the time anytime,with stylish Always-on Displays.Thanks to the powerful sensor engine, it truly realizes all-round health protection.When you engage in sustained mental labor, run a marathon, or do intense outdoor exercise, you can test your SpO2 level the moment you start feeling unwell, getting a better understanding of your physical condition and keeping your health under control.A PAI value is calculated by processing data about your heart rate, exercise time, and other complex health information with an algorithm. This value provides a customized health evaluation for each user based on their specific health data, offering everyone a unique experience.A good night's sleep is a top priority in the modern world. Therefore, the Amazfit GTS 2 supports in-depth sleep monitoring, which can more accurately determine the sleep stage (the light sleep, deep sleep, REM9 periods), monitor the sleep breathing condition, and provide quality analysis and suggestions for improvement based on a night of sleep. The watch also recognizes daytime naps in order to record more complete sleep information.Stress is an underlying cause of many health problems. With the GTS 2, you can check to see where your personal stress level lies - from relaxed, normal, medium or high - anytime you feel pressured throughout the day, so you know when to relax and reduce it.The Amazfit GTS 2 supports controlling mobile music playback through the watch, and with a massive 3GB12 of local music storage, you can transfer 300-600 of your favorite songs to the watch through your mobile phone. With your Amazfit PowerBuds13 wireless headphones, or directly through the watch speaker, you can instantly listen to your carefully collected playlist - so put down your phone, workout, and follow the rhythm of the music anytime, anywhere.Activate one of the 90 sports modes that you need and, after the exercise is over, the watch will produce a corresponding analytical report which is also viewable in the mobile app, to help you continuously improve your exercise plan. Intelligent recognition of sports modes also eliminates the need to manually select the sports modes, so the watch is always ready for action.Thanks to professional waterproofing that offers protection up to a depth of 50 meters, the. Amazfit GTS 2 is on par with traditional high-end watches and can be worn worry-free for daily use or when swimming.Thinner, lighter, and with a longer battery life. The new Amazfit GTS 2 is equipped with a 246mAh large battery that can last 7 days with normal usage, and is always ready to escort you on your journeys and track your progress. Enjoy a full week of activity without worrying about carrying a charger everywhere. Design Color : Urban Gray Size (square) : 42.8 * 35.6 * 9.7mm Weight : 24.7g (without strap) Body : Aluminum alloy Bottom Shell : Plastic Buttons : 1 button Waterproofing Grade : 5 ATM Screen Material : AMOLED Size : 1.65 inches Resolution : 348 x 442 PPI : 341 Endurance Battery Capacity : 246 mAh (typical value) Charging Method : Magnetic Charging Stand Charging Time : About 2 hours Typical Usage Battery Life : 7 days14 Basic Usage Battery Life : 20 days14 Heavy Usage Battery Life : 3.5 days14 Sensor Health : Huami self-developed BioTrackerTM 2 PPG (support blood oxygen) : biological data sensor Movement : Air pressure sensor, Acceleration sensor, Gyroscope sensor, Geomagnetic sensor, Ambient light sensor Connection : Bluetooth 5.0, WLAN 2.4GHz Positioning : GPS + GLONASS Strap Material : Silicone Width : 20 mm Clasp : Classic Pin Buckle Other Speaker : Support Microphone : Support Linear Motor : Support