5ATM Water Resistant 50 meters water resistant ,equivalent to water pressure of 50 meters underwater,not only to wear swimming,you can also record the data when swimming,and support open water and swimming pool two modes.2.5D capacitive touch screen With HD resolution 320 x 300 pixel, uses Corning Gorilla glass material, high quality Reflective display technology The dial is always bright without black screen. Uses reflective display technology, the dial brightness will auto adjust according to the environment, gives you better and more clear eye experience. Ceramic bezel Hand polished polished ceramic bezel reflects the charming luster, the excellent hardness of the ceramic can also protect it from scratch lastingly.xiaomi amazfit 2 stratos/xiaomi huami amazfit smart watch/xiaomi huami amazfit 2/huami amazfit/xiaomi watch amazfit/xiaomi amazfit stratos 316L stainless steel physical buttons With the stainless steel buttons make you more convenient to control,the case used 3D laser carbon fiber texture, make the feeling of watch texture better.amazfit 2/xiaomi stratos/xiaomi amazfit stratos 2/xiaomi stratos 2/amazfit pace/xiaomi amazfit/gps smart watch/amazfit pace 2/amazfit xiaomi 11 kinds of sports patterns Running, walking, outdoor riding, swimming pool, swimming, open water swimming, indoor running, indoor riding, elliptical machines, mountaineering, cross country running, Triathlon. In addition to the daily life of the common sports, there are many challenging project such as cross country run, triathlon and so on. GPS + Glonass Can precisely record your daily movement, mileage, altitude, stride frequency, pace and other professional sports data, help you analyze and improve your sports level. Firstbeat Health Data Tracker Show the core data and promptly remind when you are exercise, after completing the sports of exercise, it will use the firstbeat exercise algorithm to give you a physical exercise datas accroding to your amount of exercise: Maximum oxygen uptake(VO2max), Exercise load(TD), Exercise effect(TE) and Recovery Time. Long time standby for 5 days Ultra-long standby time up to 5 days in the ordinary situation, save the frequent charging trouble. if use the full GPS movement mode, the continuous use of time can reach 35 hours,it totally can complete a hundred kilometers cross-country race. Phone-Free Music Connect wirelessly to Bluetooth earbuds and enjoy music and media with the internal storage for unencumbered phone-free running. AMAZFIT smartwatch APP2.0 With the new Amazfit V2.0 or Mi Fit, you can connect the app wih the smartwatch, sync data and can look over activity data and exercise in the daily life, update all the data to your smartphone. Main Features: ● Perfect Personal Health Tracker: Sleeping Monitor, Heart Rate Monitor ● Ultra-long Battery Life: it consumes less power and can generally standby for 5 days ● 512MB RAM 4GB ROM: provides room to store pictures, videos, music and more ● Original Xiaomi Chip: features low consumption detailed with high performance, flexible and quickly ● Data Synchronism: download APP named “Amazfit Watch 2.0” to save and sync the data to achieve your healthy goal • Lift or turn over your hands, light up the screen • Support firmware upgrade Functions: ● GPS ● Alarm setting ● Support language: Simplified Chinese, Traditional Chinese, English ● Compatible with iOS 9.0 and above, Android 4.4 and above Sports & Business Brand new, simple and graceful design. Get in style, during sports or in business. Stratos combines multiple materials and techniques: 2.5D Corning Gorilla glass, delicate minute-markers, a reflective color screen that can be seen clearly even under bright sunlight and a hand-polished ceramic bezel. Ceramic is very durable and will withstand all your daily challenges while providing a beautifully timeless look. Three 316L stainless steel physical buttons plus a responsive touch screen make it easy to control all the watch functions while the case uses a 3D laser carbon fiber texture throughout.