Fitness Smart Ring, Blood Oxygen Monitoring, Heart Rate Monitoring Health Tracker, Sleep, Pedometer, Body Temperature, Compatible with iOS and Android (Black)

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Waterproof: 5ATM
Material: Shell: 316 steel
Thickness: 3mm
Weight: 3g
Color: black
Bluetooth version: 5.1
Battery type: polymer battery
Operating temperature: 0-50°C
Battery capacity: 20 mah
Charging time: 1 hour
Usage time: 3 days-5 days
Charging: magnetic charging
Compatibility: Support Android 5.0 and above; Apple IOS 10.0 and above
Function
Exercise: distance/calorie/all-day step count/goal achievement/effective activity level, etc.
Multi-exercise modes: Support more than 100 exercise modes
Heart rate: 24-hour automatic continuous heart rate test
Sleep: 24 hours of accurate sleep statistics (any time sleep can be accurately counted)
Blood Oxygen: 24 hours continuous blood oxygen test
Somatosensory games: APP supports somatosensory games
Other settings: heart rate warning, blood oxygen warning
Apple Health: Access to Apple Health
APP support language: 24 languages