ITEM NAME:Smart Watch Wristband Fitness Tracker Blood Pressure Bracelet Black Description: 1.54 inch colorful display, 150mAh battery; Monitoring heart rate all day, and protecting your health. Health Monitoring - Heart rate measurement, blood pressure measurement, sleep monitoring. Multiple sports, Smart coach on your wrist, record heart rate, and sports data real-time, Analyze and improve your exercise. Ringing reminder when you receive a call, Ringing reminder once your mobile phone disconnected. Motion recording (step counting, distance, calorie calculation), exercise mode, message push, information storage, blood oxygen saturation measurement, stopwatch, full font language. Specification: Bluetooth Version: Bluetooth 4.2+5.0 Power Supply: Built-in 150mAh rechargeable battery Package Includes: 1x P68 Smart Watch 1x USB Charger 1x English Manual Note: Transition: 1cm=10mm=0.39inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience! SKU: ALU0034048468033763.1x P68 Smart Watch.