R02 IP68 Waterproof Sleep Tracker Blood Oxygen Heart Rate Monitor Smart Ring with Charging Case - Gold/Size 8 •【Comprehensive Health Data】Record steps,sleep quality,heart rate,exercise data,and monitor blood pressure and blood oxygen levels •【Long-lasting Battery】Enjoy 5-7 days of active use or up to 15 days on standby with a quick 1-hour charging time •【Durable Construction】Crafted from high-quality stainless steel for durability and a sleek appearance •【Water-Resistant】IP68 waterproof rating allows for worry-free use during hand washing and in wet conditions •【Multi-Sport Modes】Support for various exercise modes to track your fitness activities accurately •Specifications: •Ring size: 8: Inner Diameter 18.1mm, 9: Inner Diameter 18.9mm, 10: Inner Diameter 19.8mm, 11: Inner Diameter 20.6mm •Chipset: RF03 •Compatible System: Android 5.1 (inclusive) and above,IOS 8.0 (inclusive) and above •FLASH memory: ROM 512KB •Screen size: no •Resolution ratio: no •Encoder: not support •Touch type: not support •BT: 5.0 low-power Bluetooth chip •Bluetooth call: not support •WIFI: not support •NFC: not support •Acceleration sensor: Sitronix STK8321 •Gyroscope: not support •Heart rate: Vcare VC30F •GPS: not support •Battery type: polymer lithium ion •Ring Battery Capacity: 17mAh •Charging Case Battery Capacity: 200mAh •Charging method: magnetic charging •APP: QRing •Function: Step count,sleep,heart rate,exercise data recording,health monitoring,blood pressure,blood oxygen measurement,multiple sports modes,photo taking •Support languages: Danish,Ukrainian,Russian,Croatian,Hungarian,Hindi,Indonesian,Turkish,Hebrew,Greek,German,Italian,Latvian,Czech,Slovak,Slovenian,Japanese,French,Polish,Thai,Estonian,Swedish,Lithuanian,Simplified Chinese,Traditional Chinese,Romanian,English,Dutch,Portuguese,Spanish,Vietnamese,Arabic,Korean,Malay •Waterproof level: IP68 •Charging time: about 1 hour •Battery life: 5-7 days of use,15 days of standby •Appearance material: stainless steel Package included: •1 x Smart Ring •1 x Charging Cable •1 x Charging Case •1 x English User Manual