Specification:  Color: Black, Red.  Bluetooth Version: BT 4.0 or above.  Compatible OS: Android 5.0 or above, iOS 9.0 or above.  Operating Mode: Touch Key.  APP Name: Fitpro.  App Language: Russian, Turkish, German, Czech, Slovak, Japanese, French, Polish, Thai, Simplified Chinese, Traditional Chinese, English, Dutch, Portuguese, Spanish, Arabic, Malay.  Waterproof: IPX7.  Heart Rate Monitor: Support.  Blood Pressure Monitor: Support.  Blood Oxygen Monitor: Support.  Sleep Monitor: Support.  Multi-sport Modes: Support.  Pedometer: Support.  Call orMessage Reminder: Support.  Reject Call: Support.  Notification: Support.  Alert Type: Vibration.  Auto Light-up Screen: Support.  Do Not Disturb: Support.  Other Functions: Support Alarm,Calender,Sedentary reminder,Camera remote control,Anti-lost.  Sensor: G-sensor, Heart Rate Sensor.  Size:  1.3inch.  Type:  TFT.  Resolution:240*240 pixels.  Battery: Battery Capacity: 90 mAh.  Standby Time: About 10 days.  Using time: About 5 days.  Charging Time: About 2 hours.  Charging Type: Clamp charging.  Band: Material: TPU.  Length: about 210mm.  Width: about 20mm.  Weight and Size.  Product size: about 45.7*32.9*11.mm.  Product weight: about 35g.     Package:  1*Smart Bracelet.  1*Charging Cable.  1*User Manual.     Tips:  1. Display and light of shoot will affect the color of the products, pictures for reference only, subject to our available products. 2. Please download the app before usage in order to compatible perfectly with your phone.