N/A Smart Ring in Color Black Size 9

Hard to find this size. Perfect for tech enthusiasts. Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen, Blood Pressure for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Black) Download the free app called Smart Health to use it. Comes with usb rechargeable case to store your ring in. The sample case on the picture is mind.