Smart Bracelet for Women, Screenless Jewelry Fitness Tracker with Heart Rate, Sleep & Stress Monitoring, Activity Tracker Band, Pedometer, Waterproof, 7-Day Battery, Smart Reminders, Gift for Her, Red

This smart bracelet is constructed from zinc alloy and epoxy resin, weighing 12 grams. The screenless design resembles a jewelry accessory. The device includes an 18mAh polymer battery providing 3-5 days of use per 2-hour charge. Charging is via magnetic cable with integrated protection IC. The fitness tracker uses the HX3918 sensor to monitor heart rate, blood oxygen (SpO2), and stress levels. Heart Rate Variability (HRV) analysis is included. Sleep monitoring tracks sleep duration and sleep quality, distinguishing deep and light sleep cycles. The Nx Wear app displays all health data. A female physiological cycle tracker logs menstrual periods and predicts ovulation windows. Multiple sports modes are available for walking, running, cycling, and yoga. The device functions as a step counter and pedometer. Waterproofing supports swimming and diving. The device meets GB/T 2423.8 drop standards and GB/T 2423.10 vibration standards. Electrostatic protection is rated at contact ±6KV and air ±10KV, with surge protection at 12V. Charging temperature protection activates at 45°C. Bluetooth 5.3 connectivity pairs with Android 6.0+ and iOS 11.0+ devices via the Nx Wear app. The device syncs step counts, sleep history, heart rate trends, and cycle data. A shake-to-capture photo function is included. Vibration alerts notify of incoming calls.