[Stylish Design]Fashionable chain-style bracelet with a high-quality zinc alloy and epoxy resin construction, perfect for women who want to combine health tracking with elegance. [Comprehensive Health Monitoring]Features 24/7 heart rate monitoring, blood oxygen detection, stress level assessment, and women's physiological cycle tracking for complete health insights. [Fitness Tracking]Equipped with multiple sport modes, step counting, and sleep monitoring to help you maintain an active and healthy lifestyle. [Smart Functions]Enjoy convenient features like shake-to-capture photos and remote camera control for both Android and iOS devices. [Long Battery Life]With a 3-5 day working time, you can rely on this smart bracelet to keep up with your busy schedule without frequent charging. Specifications: Hardware CPU OM6626B Material Zinc alloy + epoxy resin Bluetooth-compatible Version BLE 5.3 Battery capacity 18mAh Working Time About 3-5days Charing time 2H G Sensor SC7A20H Heart Rate Sensor HX3918 Charging Cable Magnet Cable(With SMT Protect IC) Waterproof Level 5ATM Charging Requirement Charging 1A or less Software APP Nx Wear Function Heart rate detection Blood oxygen test Pressure detection Heart rate variability Female physiological cycle Shake it to take a photo Multiple sport modes Sleep detection (Sleep time, Sleep quality) Step count Synchronous data to APK/APP APP Download Download “Nx Wear" from Android market or for Apple store????? Scan the following QR code and download "Nx Wear" Parameter System requirements Android: 6.0 or aboveiOS: 11.0 or higher Environmental requirements Operating temperature: 0~45℃ Storage temperature: -10~55℃ Working humidity: 5%~95% (non-condensing) Electrostatic protection: electrostatic standard contact: ± 6KV, air: ± 10KV Surge protection: 12V Drop requirements: refer to GB/T 2423.8 standard Vibration requirements: refer to GB/T2423.10 standard Charging temperature protection: 45℃