<b>Notice</b><br>Buy Amazfit products from US authorized sellers to ensure satisfaction-guaranteed service. Amazfit is always available to help you get the most from your smartwatch.<br><p><b>About Amazfit</b><br>Launched in 2014, Huami is now the largest wearable device company worldwide with over 50 million units sold. Huami's Amazfit product line of smartwatches and activity trackers including the newly launched Bip, Stratos and Cor effortlessly track activity without sacrificing style or performance. <br><p><b>About Amazfit Stratos</b><br>Amazfit Stratos is a premium multisport GPS smartwatch with 5ATM water resistance, always-on color display, and 14 sport tracking modes. Through a partnership with Firstbeat the watch measures VO2max, exercise load (TD), and recovery time to help athletes optimize their workouts. <br><p><b>Product Highlights</b><br>Ceramic bezel, anti-scratch glass, stainless steel buttons, and carbon fiber detailed housing<br>Up to 11 days of battery life with light use, 5 days with normal use, or 35 hours with continuous heart rate and GPS monitoring<br>14 sport modes: running, walking, cycling, swimming, elliptical, trekking, trail running, triathlon, skiing, tennis, soccer, and others<br>Track daily steps taken, distance traveled, calories burned, heart rate and sleep quality<br>5ATM water resistance up to 164ft/50m<br>Phone-free music<br><p><b>Specifications</b><br>Display: 1.34'' transflective touchscreen<br>Weight: 2.5oz (70g)<br>Processor: 1.2GHz Core<br>Storage: 4GB<br>Connection: Bluetooth 4.0+WiFi<br>Battery: 290mAh Li-ion<br>Waterproof: 5ATM certified, 164 ft water depth<br>Sensors: optical heart rate sensor, 9-axis IMU (accelerometer, gyroscope, magnetometer), barometer, ambient sensor<br>GPS: GPS+GLONASS<br>System Requirement: Android 4.4/iOS 8.0 or above<br>Mobile App: Amazfit Watch, supports iOS and Android<br><br>Language: English<br>Includes: 1x smartwatch, 1x USB cable charging dock, Instructions (English) and US Warranty<br>