Smart Ring - Health Tracker with SPO₂/HRV/Sleep Monitor, 5ATM Waterproof & No Subscription, 7-Day Battery for Men & Women, iOS A

Good luck with your favorite purchasesIs Batteries Included : Yes Hign-concerned Chemical : None Application : Arm Commodity Quality Certification : ce Brand Name : YOSYO Origin : Mainland China Item Type : Household Health Monitors Accessories Number of Pieces : One Unit