Brand Name: Ola Esporte Model Number: Smart Ring Certification: ce Certification: FCC Origin: Mainland China High-concerned chemical: None Activity Tracked: Activity Tracker Activity Tracked: Steps Tracker Activity Tracked: Calorie Tracker Waterproof Grade: 3ATM Case Material: Plastic NFC Support: No Metrics measured: Heart Rate Monitor Metrics measured: Sleep Monitor Metrics measured: Blood Oxygen Monitor Display screen: No Product: Smart Ring Smart Ring for Men: birthday gift Smart Ring for Women: wedding gift Drop Shipping: Free Shipping Fast Delivery: 10-15days Material:: Aerospace titanium alloy Waterproof Level: IP68 Bluetooth distance: 3-5 meters System requirements: android5.0+ / ios10.0+ Smart Ring for men: For R03 R09 R06 R02 R5 R3 R2 M1 Sr200 Rs Smart ring Smart Ring for women: For Android IOS Choice: yes