Rogbid Rowatch 2 1.69 inch TFT Screen Smart Watch, Support Blood Pressure MonitoringSleep Monitoring 1. Screen size: 1.69-inch TFT square screen 2. Material: ABS+PC, zinc alloy, electroplating, glass, silicone 3. Main chip Nordic 52832 4. Accelerometer: SC7A20 5. PPG heart rate sensor: HRS3300 6. Touch IC: Sea Oak 716S 7. Resolution: 240*280 8. Flash size: 64M 9. Bluetooth version: BLE5.0 10. Antenna: FPC 11. Battery capacity: 200mAh 352226 12. Charging method: magnetic suction line charging 13. Waterproof grade: IP67 14. Standby time: 30 days 15. Use time: about 5-7 days (depending on usage) 16. Compatible mobile phone system: Android 5.0 and above, IOS 9.0 and above, support Bluetooth 4.0 17. Languages ??supported by the bracelet: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese 18. APP display language: Simplified Chinese, English, Italian, French, German, Spanish, Portuguese, Russian, Japanese, Thai, Arabic, Korean 19. Bracelet push language: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese 20. Functions: blood pressure monitoring, sleep monitoring, blood pressure and oxygen monitoring, step calculation, exercise distance, calorie consumption, raising hand to brighten the screen, alarm clock reminder, call reminder, SMS reminder, message notification, sedentary reminder, stopwatch, music control , control the camera, the weather, etc. 21. Product size: 43.7x35.4x10.3mm 22. Weight: 48.8g