Brand Name: Ola Esporte Model Number: smart ring Certification: ce Certification: Dot Certification: FCC 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: 5ATM Case Material: Alloy Item Weight: 7 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): 20 Display screen: No Drop Shipping: Free Shipping Fast Delivery: 7-10days Smart Ring for Women: birthday gift Smart Rings for Men: wedding gift Smart Ring: For R03 R06 R08 R09 R02 R5 R3 R2 M1 Sr200 Smart ring Material: Stainlness steel Smart Ring for Men: birthday gift Smart Ring for Women: wedding gift Healthy Smart Ring: for R09 R06 R02 R03 R06 M1 R3 R2 R4 R5 Rs Sr200 Smart Ring Choice: yes