B7 Bluetooth Earphone Smart Bracelet, Support Sleep Monitoring / Blood Oxygen Monitoring / Heart Rate Monitoring(Silver + Silver Steel Chain) woman denim jeans Size: Round tiles (18*7)

Size: Round tiles (18*7)

soft handle

Smart cover can make your tablet wake up or sleep by opening or closing the cover

image enhancement

★Flip front lens

B7 Bluetooth Earphone Smart Bracelet, Support Sleep Monitoring / Blood Oxygen Monitoring / Heart Rate Monitoring(Silver + Silver Steel Chain) woman denim jeans Size: Round tiles (18*7)1. Bluetooth version: 5. 0 2. Talk time: about 6 8 hours 3. Standby time: about 3 4 days 4. Battery capacity: Built in 90mAh 5. Charging method: Type C input 6. Charging time: about 1 2 hours 7. Waterproof level: life waterproof 8. Hidden earphone design, pick up to answer and put in to hang up 9. Blood pressure and oxygen monitoring anytime, anywhere, to accurately grasp your health status 10. The caller's name and number are clear at a glance, so