Ultra-narrow SR09 Sports Fitness Heart Rate Blood Oxygen Sleep Tracking Monitoring Smart Ring

Product information:
Color: Black 7 #, black 8 #, black 9 #, Black 10 #, Black 11 #, Black 12 #, gold 7 #, gold 8 #, gold 9 #, gold 10 #, gold 11 #, gold 12 #, Silver 7 #, silver 8 #, Silver 9 #, silver 10 #, silver 11 #, silver 12#
Applicable people: Unisex
Battery capacity: 17mAh
Additional features: steps, distance, and calories calculation
Wearing method: finger wearing
Packing List: Machine packing instructions