Product parameters: Bluetooth version: V4.0 Display: 1.3 inch TFT color screen 240*240 Touch: single touch Charging: magnetic charging Battery: 170mAh Standby time: 30 days Working time: 7 days Shell parts: zinc alloy Strap: Silicone/Milanese Memory: Rom 512k ram64k Waterproof rating: IP67 Function: Font library APP: German, Czech, Russian, French, Korean, Japanese, Spanish, Italian, Portuguese, English, Chinese, Traditional Chinese (12 countries), bracelet: Chinese and English APP: Wearfit2.0 (compatible system: Android 4.4 Apple 8.0) Monitoring: heart rate monitoring, blood pressure monitoring, blood oxygen monitoring, fatigue monitoring, one-key physical examination, Reminder: alarm reminder, message reminder, charge/full reminder, connection success reminder Sports sleep monitoring: step counting, distance, calories, running, climbing, cycling, sleep monitoring Display: Time/date/week/clock dial display, set the main interface UI switch, clock dial battery display, charging status display Smart reminder: SMS, QQ, WeChat, facebook, twitter, etc. content display, caller ID display name, phone number Features: Raise your hand to brighten the screen and take pictures remotely Specifications: Single head size: 42.5*36*9.5 (MM) Strap unfolded length: 255*20*2.3 (MM) Product weight: 45.00g Packing box size: 108*75*55(MM)