Sxhlseller Smart Ring - Inner Diameter 19mm

Specification Item Type: Smart Ring Material: Stainless Steel, Electronic Components Ring Battery Type: Lithium Battery (Built in) Ring Battery Capacity: 18mAh Ring Battery Life: 3-5 Days Ring Charging Time: 60 Minutes Color: Purple Ring Number No. 18 No. 20 No. 23 Ring Inner Diameter No. 18: 18.9mm/0.74in No. 20: 19.8mm/0.78in No. 23: 20.6mm/0.81in Applicable Finger Circumference No. 18: 59.5mm/2.34in No. 20:62.1mm/2.44in No. 23: 64.6mm/2.54in How to Use 1. After receiving the product, download the Ring APP. 2. Once the download is complete, you can connect and use the ring. 3. Ring power on mode: Fully charged and self starting. Package List 1 x Smart Ring 1 x Charging Cable 1 x User Manual