LIGE | LIGE No Screen Smart Watch Health Fitness Tracker 24/7 Heart Rate Monitor Activity Sleep Menstrual Cycle Tracking Smart Bracelet

APP name: Nx Wear System requirements: Android 6.0 or later, iOS 11.0 or later. Features: heart rate monitoring, blood oxygen monitoring, stress monitoring, heart rate variability, women’s menstrual cycle tracking, shake-to-capture photos, multiple sports modes, sleep monitoring (sleep duration, sleep quality), step counting, data synchronization to APK/APP.How to Power On: This smart bracelet features screenless design and needs to be charged to power on. After receiving the package, it is recommended to charge it for half an hour before attempting to turn it on. Before use, please scan the QR code on the manual to download the APP, and connect the watch through the APP.