R02 Smart Ring, a Smart Ring for Women and Men, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring, Size First Sizing Kit. (Includes Ring Sizer Only)

Specifications

• [Purchase a Sizing Kit] Before purchasing the COLMI R02 smart ring, we strongly recommend that you purchase the COLMI sizing kit or measure your finger size according to the size chart to help you choose the correct ring size for a comfortable fit and to avoid unnecessary returns or exchanges.
• [Best After-Sales Service] Thank you for your trust and we provide professional after-sales service. If you have any usage or quality issues, please feel free to contact us. Included accessories: 1 smart ring, 1 portable charging case, 1 charging cable, and 1 instruction manual.
• Operating System: Android, iPhone
• Memory Storage Capacity: 1 MB
• Special Feature: COLMI R02 Smart Ring Sizing Kit
• Battery Capacity: 15 Milliamp Hours
• Connectivity Technology: Bluetooth
• Wireless Communication Standard: Bluetooth
• Battery Cell Composition: Lithium Polymer
• GPS: No GPS
• Shape: Round
• Brand: COLMI