Smart Health Ring for Women Men Fitness Tracker with Heart Rate, Blood Oxygen, Blood Pressure, Sleep Monitoring, Step Counting, IP68 Waterproof for iPhone and Android, No Subscription Fee, Gold 8

OURA

Ring 4 - Silver - Size 9 - Smart Ring - Size First with Oura Ring 4 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days of Battery Life

Smart Ring for Women Men, Health Fitness Tracker Ring, IP68 Waterproof Rings, Sleep Ring with Charging Case and Ring Protector, Remote Photography, Family Care, No App Fees (Silver, 10#)

Smart Ring for Women Men-Wearable Fitness Tracker with Sleep Tracking Heart Rate Blood Oxygen Healthy Monitor Ring Activity Monitoring Steps Calories

Smart Ring for Women&Men-Activity/Sleep/Heart Rate/HRV/Stress/Women's Health Tracker-IP68 Waterproof/Wearable-No Subscription Fee Required-Compatible with iPhone &Android (Gold, 10)

ULTRAHUMAN

Ring AIR-Smart Ring Health Tracker, Size First Sizing Kit,Sleep Tracker,Smart Ring for Men/Women,Fitness Tracker (Made in India, Swatch Sizing Kit, Swatch Sizing Kit)

Smart Ring with Sleep Monitoring, Step Counting, Heart Rate, Blood Oxygen for iPhone and Android, No Subscription Fee, IP68 Waterproof Health Tracker (Gold, 10)

Samsung

Galaxy Ring, AI Smart Ring, Size First w/Sizing Kit, No App Subscription, Fitness Monitor, Sleep Tracker, Up to 7-Day Battery, Size 13, Titanium Black [US Version, 1Yr Manufacturer Warranty]

Smart Ring Health Tracker, Sleep Tracker Ring with Heart Rate, Waterproof Fitness Ring for Activity Monitoring/Steps/Distance/Calories, Air Gestures, Up to 7-Day Battery, for iOS Android (Black,#11)

OURA

Ring Gen3 Horizon - Silver - Size 11 - Smart Ring - Size First with Oura Ring Gen3 Sizing Kit - Sleep Tracking Wearable - Heart Rate - Fitness Tracker - 5-7 Days Battery Life

Smart Ring for Women Men - Fitness Tracker with Heart Rate/Blood Oxygen/Stress Monitor/Steps/Sleep Tracking, No App Subscription, 5ATM Waterproof Health Rings

Smart Health Rings for Women Men, Fitness Tracker with Heart Rate, Blood Oxygen, HRV, Sleep Tracker, Step Tracker, No Subscription Fee, IP68 Waterproof Smart Ring for iphone & Android (Gold 11#)

Smart Ring Health Tracker for Women & Men - IP68 Waterproof Fitness Rings with LED Screen, Heart Rate/Blood Oxygen/Sleep Monitoring/Motion Tracking, No Subscription Fee

RingConn

Gen 2, World’s First Smart Ring with Sleep Apnea Monitoring, No APP Subscription, 12-Day Battery Life, Stress/Heart Rate/Women's Health Tracker, Android & iOS Compatible (Silver, Size 8)

Smart Ring for Women & Men Fitness Tracker with Heart Rate, Blood Pressure,Blood Oxygen,Step Counting, Sleep Monitoring,IP68 Waterproof for iPhone and Android, No Subscription Fee (Rose Gold, 9)

Smart Ring Fitness Tracker Sleep Tracking Heart Rate Monitor Pedometer, Waterproof Activity Tracker Fitness Ring Steps Counter, Gesture Controls for Short Video, 8 Days Last, Black, #9