Description Health Features: Wrist-based Heart Rate (automatic measurement), Blood oxygen, Blood Pressure, Sleep tracker, Drink water reminder, Reminder to move, Women's Physiological cycle, Zen mode, Support health APP. Voice Calling Features: Voice Calling, Dial Pad, Recent Call, Contact, Call Rejection, Voice Assistant. Life Features: Smart Notifications(Call, Text, Gmail and Smartphone App Notifications), Alarm clock, Game, Flashlight, Timer, Stopwatch, Weather, Controls Smartphone Music and Camera, Find My Phone and Watch, Calculator, Set the screen off time, Do not disturb mode. Sports Features: Activity Record( Steps, calories, distance), Sport Goal, 100+ Exercise Modes, Sports Data Report, IP68 waterproof. Watch Faces APP Sync: 230+ watch faces System Default: 7 Customize Watch Faces: Support, you can set the picture you like as the watch face. COLMI P71 Spec. Main chipset: Realtek RTL8763E Display size: 1.9 ''large TFT color display. Display Resolution: 240*285 pixels Battery Capacity: 230 mAh Li-pol battery. Battery Life: Standby mode: Up to 20 days Typical usage modes: Up to 10 days Heavy usage modes: Up to 5 days Coutinuous Voice Calling: Up to 280 mins Charging Time: About 1.5 hours Waterproof level: IP68 Waterproof APP: "pubu Wear" Suitable for mobile phones with Android 5.0 or higher, or iOS 9.0 or higher. Language English, Portuguese, Arabic, Russian, Ukrainian, German, Japanese, Spanish, Italian, French, Greek, Dutch, Turkish, Polish, Romanian, Thai, Vietnamese, Indonesian, Hebrew, Bahasa Malaysia, Simplified Chinese.