Made with high-quality silicone, this wristband is not only durable but also incredibly comfortable to wear. Sleep tracking feature to monitor and improve sleep quality. Customizable watch faces with daily updates and the ability to use personal photos as backgrounds. Large font screen display for easy reading and accurate timekeeping. Smart functions like incoming call reminders and message push notifications for added convenience. Item Name: Smart Bracelet Material: Silicone, ABS CPU: OM6621D Bluetooth-compatible: 4.0 Display: 80*160 Touch: Single Touch Battery Capacity: 90mah Standby Time: about 15 Days Charging Method: USB Charging Waterproof: Waterproof Language: Default (English), Simplified Chinese, Dutch, Russian, French, German, Portuguese, Spanish, Turkish, Poland, Malaysia, Czech, Slovak APP: Fit-here Function: Dial Push, Count Steps, Mileage, Calorie Consumption, Sleep Detection, Sedentary Reminder, Multi-sport Mode (running, Mountain Climbing, Hiking, Cycling) Information Push (QQ, WeChat, WhatsAPP, Line, Instagram), Incoming Call, SMS Notification, Smart Alarm Clock, Shake And Take A Photo, Looking for Bracelet, Find Mobile Phone, Raise Your Hand to Brighten The Screen Features: HD-compatible, Waterproof, Fitness Tracker Size Details: L: 4.5cm/1.77", W: 2cm/0.79", H: 1cm/0.39" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Smart Bracelet 1 x User Manual