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.