Description: Tracker: This kind of smart watch helps you know the calorie, steps, mileages, heart rate, body temperature, sleep quality, etc. Touch screen: This smartwatch has a digital 1.69inch screen which can be operated smoothly, and you can read the data clearly. for Protection: This wristwatch is IP67 waterproof, you can use it without being damaged by water, not suitable for swimming or bathing. APP linkage: Also, this intelligent watch supports phone clock, message notification, call reminder, sedentary reminder and music control. Rechargeable: This smart watch has a built-in 250mAh battery, it can be used for a long time after fully charged. Specification: Color: black. Size: approx. 42*36.5*11mm/1.65x1.44x0.43inch. Total length: approx. 250mm/9.84inch. Adjustable length: approx. 155-215mm/6.1-8.46inch. Battery: built-in 250mAh. Standby time: about 15 days. Charging time: about 2h. Screen: 1.69inch full touch IPS screen, 240*280P. Support system: replacement for Android 5.0 and above, replacement for iOS 10.0 and above. Waterproof: IP67. Bluetooth-compatible version: 5.0. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package Includes: 1 Piece Smart Watch(with 1 Piece USB Charging Cable, 1 Piece English User Manual).