Feature: MILITARY GRADE STANDARD -This outdoor sports watch has a 10 military grade certifications and can be used under harsh environmental conditions, such as 70 ℃ heat resistance, -40 ℃cold resistance, 120 hours resistance to humidity, 96 hours resistance to salt spray. REAL TIME HEALTH MONITOR - This fitness tracker supports blood oxygen and heart rate monitor in real time. Besides, EIGIIS can also record your sleep quality. Making you get a better understanding of your health. Developing healthier life habits. MULTI SPORTS MODES - This sports watch contains abundant sports modes. Tracking you activities, recording your burned calorie, steps, distance, health data precisely. Improving your exercise efficiency, bring you more self-achievement happiness. SMS CALL NOTIFICATION & MULTI-FUNCTIONS - As a premium smart watch,it can easily pair with your phones, remind you the message and calls by vibration. Besides, it also supports weather forecast, remote camera control, stopwatch etc. LONG BATTERY LIFE / GREAT COMPATIBILITY - Equipped with a 400mAh battery, This sports watch can be used up to 5-7 day with a standby time about 20 days. And this watch compatible with Android 4.0 / IOS 8.0 or above Bluetooth 4.0.