Description: Product type: Intelligent bracelet system requirements: Android 5.0 and above, iOS 9.0 and above, supporting Bluetooth 4.0. Bluetooth version: BLE 4.0 chip: NRF52832 screen: 1.3-inch IPS color battery: 100mAh waterproof level: IP67 sensor: three-axis sensor/green light active heart rate sensor watch display function: time display, battery icon display, date display, Weekly display of standard exercise functions (steps, distance, calories) Multiple exercise modes (walking, running, cycling, skipping rope, badminton, basketball, football, swimming) Health check functions: heart rate, blood pressure test, blood oxygen test (can save the last 7 records) Sleep time display, screen brightness adjustment, music control, motor vibration switch, historical information storage Other: Do not disturb mode, raise your hand to light up the screen, Time format setting, factory recovery, long press to reject the call, three clock interface selection, music control (support last time, next time, play/pause), weather display, Apple health languages: Chinese, English, Spanish, French, Dutch, Portuguese, German, Russian, Turkish, Japanese, Persian, Arabic, Malaysian, Thai. APP name: YOHO Sports. Note: Wearable devices monitor human activity through electronic sensors, and they are at the level of consumer electronics. Some deviations are normal. Users should treat data objectively. Before use, please scan the QR code in the manual to download the application and connect it to the watch using the application. For Android users: Please always authorize Yoho sports to access all phone features and always let it run. Before connecting, please turn on the GPS on your phone. Please charge the phone for 2-3 hours upon receipt. After a long time of delivery, the phone runs out of battery. Thank you. Package includes: 1 smart bracelet, 1 user manual, 1 retail box (excluding charger, USB charging)