Size 11: Dia 20.8mm; Circumference 65.4mm. Daily activities: Step count, distance, calorie calculation. Smart ring x 1. Sensor chip: STK8321-W. Charging line x 1. Battery Capacity: 15mAh(18mAh for size 9 and above).
Ultrahuman Ring AIR, Smart Ring for Women and Men (Raw Titanium, Size 6
Femometer Gen1 Smart Ring Fertility and Ovulation Tracking White Rose Size 7
Femometer Gen1 Smart Ring Fertility and Ovulation Tracking White Rose Size 9
Femometer Gen1 Smart Ring Fertility and Ovulation Tracking White Rose Size 8
Femometer Gen2 Smart Ring Fertility and Ovulation Tracking White Gold Size 9
Femometer Gen2 Smart Ring Fertility and Ovulation Tracking White Gold Size 7
