Notice Buy authentic Amazfit products from US authorized sellers to ensure satisfaction-guaranteed service. Amazfit is always available to help you get the most from your smartwatch. About AmazfitLaunched in 2014, Huami is now the largest wearable device company worldwide with over 50 million units sold. Our Amazfit product line of smartwatches and activity trackers effortlessly track activity without sacrificing style or performance. About Amazfit Pace The Amazfit Pace is the ultimate running smartwatch that blends comfort, technology, and style. It helps runners accurately track progress and stay motivated. Product Highlights: Up to 11 days of battery life for standard use, and up to 5 days for heavy use. Record-breaking 35 hours battery life with continuous heart rate and GPS tracking Track your runs, and capture distance, time, pace, speed, cadence, heart rate, calories, altitude, and elevation gain/loss8 optimized sports modes: running, treadmill, indoor cycling, outdoor cycling, walking, trekking, trail run and elliptical Always-on color display is easily readable even in bright sunlight Pair with Bluetooth headphones for phone-free music listeningIP67 certified, resistant to dust, rain, splashing, and accidental submersionSpecifications:Display: 1.34'' circular transflective color LCDProcessor: 1.2GHz Core Storage: 4GB TotalGPS: GPS+GLONASSSensors: Optical heart rate sensor, 9-axis IMU (accelerometer, gyroscope, magnetometer), barometer, ambient sensor Connection: Bluetooth 4.0+WifiBattery: 280mAh Li-ion Waterproof: IP68 dust and water proof Weight: 1.9oz / 54.5g with strap System Requirement: Android 4.4 / iOS 8.0 or above Application: Amazfit Watch, supports for iOS and Android Language: English Includes: 1x Smartwatch, 1x USB Cable Charging Dock, English Instructions and US Warranty.