HK13 Screenless Smart Bracelet

HK13 Screenless Smart Bracelet Fitness Band, QWatch Pro, Heart Rate, Blood Oxygen Monitoring Features: 1. Multi-function smart band supporting heart rate monitoring, blood oxygen detection, stress monitoring, HRV analysis, sleep tracking and step counting. 2. Supports multiple sports modes and GPS sports tracking through the QWatch Pro app for comprehensive activity management. 3. Equipped with BT 5.3 connection, providing stable and efficient wireless communication with Android and iOS devices. 4. Lightweight and compact design with a 25g body weight, comfortable for daily wearing. 5. Built-in 50mAh lithium polymer battery, supporting magnetic charging and long battery life up to about 20 days. 6. Supports smart reminders including incoming call alerts, message notifications, low battery reminders and do not disturb mode. 7. 1ATM waterproof design suitable for daily use and basic water-resistant protection. Specification: 1. Product name: Smart Fitness Band 2. Product size: 34.6 x 16.6 x 8.2 mm (excluding strap) 3. Weight: 25g (excluding strap) 4. Main functions: Heart rate monitoring, blood oxygen monitoring, stress monitoring, heart rate variability, female menstrual cycle monitoring, shake-to-take photo function, multiple sports modes, sleep monitoring, and step counting. 5. Chipset supplier: Realtek 6. Chipset: 8762ESF 7. APP: QWatch Pro 8. Compatible system: Android 4.0 and above, iOS 9.0 and above 9. Memory: RAM 104KB, ROM 272KB, Flash 32Mb 10. Bluetooth version: BT 5.3 11. WiFi: Not supported 12. NFC: Not supported 13. G-sensor: STK8321 14. Heart rate sensor: VC30FS 15. GPS: Not supported 16. Battery type: Lithium polymer 17. Battery capacity: 50mAh 18. Charging method: Magnetic charging cable 19. Waterproof level: 1ATM 20. Charging time: Approx. 1.5 hours 21. Battery life: Approx. 20 days, standby time approx. 40 days 22. Notification method: Motor vibration