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).
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Cal-mi Ring Women Weight Loss, Cal-mi Smart Ring, Calming Ring Magnetic, for Anxiety Reduction, Balance Sleep (Gold)
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Marhynchus Smart Ring Health Tracker IP68 Water Resistant Photo Control Multiple Sport Modes Fitness Sleep Ring (1#16)
