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1. Bluetooth version: BLE 5.0 2. Main control chip: Ruiyu 8763EWE-VP 3. Memory: Flash 128MB 4. Resolution: 466x466 5. Battery capacity: 400mAh 6. Standby time: about 30 days 7. Working time: about 5-10 days 8. Screen: 1.43-inch AMOLED low-power full-circle screen 9. System requirements: Android 4.4 and above, iOS 8.0 and above 10. Support Bluetooth calls, heart rate detection, blood pressure detection, blood oxygen detection, all-day heart rate detection, sleep monitoring and other functions
