Immersive screen with 70.6% high screen-to-body ratio 1.45 HD AMOLED display Health Metrics: Heart Rate/SpO2/Stress Level/Breathing Rate Sleep Quality and Sleep Breathing Monitoring Professional Sports Data Analysis: maximum oxygen uptake (VO2 Max), full recovery time, training load and training effect Connect to popular health platforms: Apple Health, Strava, Relive, Runkeeper and TrainingPeaks Music storage & playback/Bluetooth phone calls/Mic & Speaker Built-in/Alexa Built-in/Wifi. Clear & Easy-to-read Ultra HD AMOLED Display: With unprecedented visual clarity that reaches 331 ppi, the large 1.45-inch screen of the Amazfit GTR 3 Pro activity tracker shows you exactly what you want, when you want it, and is visible even under bright sunlight. The ultra HD AMOLED display boasts a 70.6% screen-to-body ratio. Test Four Health Metrics in One Tap: With the Amazfit GTR 3 Pro fitness watch you can test your heart rate, blood-oxygen saturation, stress level and breathing rate in a single tap of the watch and get a result in as little as 45 seconds. High Precision GPS and 5 ATM Water Resistance: The Amazfit GTR 3 Pro sports watch has a built-in barometric altimeter to help keep an eye on the altitude and air pressure of your outdoor activities, and supports GPS, GLONASS, Galileo, BDS and QZSS satellite navigation systems to track your route. Listen to Your Music & Receive Bluetooth Calls: When you’re out for a walk, working out, or seeing friends, you can leave your phone in your pocket. Through Bluetooth connection to your phone, the Amazfit GTR 3 Pro smart watch can receive phone calls. ConnectivityZepp OS operating system. Bluetooth 5 connection. Wi-Fi. Display information36.83mm AMOLED screen. Touchscreen. 466 x 466 screen resolution. Battery450mAh battery capacity. Typical usage time of up to 12 days. Low usage time of up to 30 days. 1 hour charge. Physical specificationWatch size H46, W46, D10.7mm. Strap size L218, W22, . Strap can be removed and replaced. Weight 43g. FeaturesWater resistant. Swimproof. Dust resistant. Scratch resistant. Make calls. Answer calls. Read texts and reply to texts. Read emails. Receive social network notifications. View calendar. Displays weather. Music player. Heart rate monitor. Pedometer. Distance. Accelerometer. GPS. Calories. Sleep. Accessories included: USB Charger, including charger. Manufacturer’s 2 year guarantee. EAN: 6972596103622.