Brand Name: Ola Esporte Model Number: Smart Ring Certification: ce Certification: FCC Certification: NONE Certification: EAC Origin: Mainland China High-concerned chemical: None Function: Message Reminder Activity Tracked: Activity Tracker Activity Tracked: Steps Tracker Activity Tracked: Distance Tracker Activity Tracked: Calorie Tracker Waterproof Grade: NONE Case Material: Alloy NFC Support: No Metrics measured: Heart Rate Monitor Metrics measured: Blood Pressure Monitor Metrics measured: Sleep Monitor Metrics measured: Blood Oxygen Monitor Metrics measured: Stress Monitor Battery Capacity(mAh): 220amh Display screen: Yes Smart Ring for Men: birthday gift Smart Ring for Women: wedding gift Healthy Smart Ring: for M1 R3 R2 R4 R5 Rs Sr200 Smart Ring Drop Shipping: Free Shipping Fast Delivery: 10-15days Bluetooth distance: 3-5 meters Smart Ring for men: For R09 R08 R06 R03 R02 R5 R3 R2 M1 Sr200 Rs Smart ring Smart Ring for women: For Android IOS Choice: yes