Smart Ring No Subscription, Health Tracker Ring for Women (Gold, 6#) | Tracker Sleep, Blood Oxygen, Heart Rate, SpO2, HRV Stress, Step Counter, IP68 Waterproof, Compatible with iOS & Android

Product description

【Size Guide & Perfect Fit – Skip Return Hassles】Refer to our official smart ring size chart and measure your finger circumference prior to placing your order. A full range of standard sizes offers a snug, irritation-free fit for all-day wear.
【6‑in‑1 Health Tracking & Real‑time Data Monitor】This HollowTree smart health ring accurately tracks heart rate, blood oxygen, HRV, stress and steps, serving as an all-in-one heart rate, step and fitness ring tracker. It precisely calculates daily & workout calories, and all health data sync instantly to its dedicated app for full health tracking.
【Professional Sleep Tracking – Sleep Cycle Analysis】Our sleep ring auto-tracks full deep, light and awake sleep cycles. This sleep tracking ring monitors overnight blood oxygen shifts & breathing patterns to capture core sleep metrics, ideal for men and women. It logs 24/7 sleep data and creates detailed analysis reports for sleep tracker reference.
【Zero Subscription & Multi-Sport Modes】No locked-in subscriptions or hidden fees whatsoever with our no-subscription smart ring. This HollowTree smart ring supports various sport modes: walking, running, cycling, yoga, hiking and more.
【5-Day Long Battery Life & Easy Charging】A full charge delivers 5 consecutive days of 24/7 tracking and sleep monitoring for your smart health ring. The included 400mAh charging case offers 10–15 extra recharges for portable power, ideal for travel and outdoor use with your fitness ring. Plug-and-charge design, no complex operations needed.
【80M IP68 Waterproof Swimming Support】This IP68 smart ring tracks complete swimming metrics, ideal for showers, handwashing and everyday sweat. Just rinse after pool/seawater use; no removal required for bathing, swimming or daily water activities. Perfect for water sports and daily wear.
【Wide Compatibility & All-Day Comfort】Fits all iPhones & Android smartphones with stable links and smooth data sync. Slim lightweight build brings pressure-free comfort for all-day wear, sleep & long shifts, fit for men & women fitness tracking. Gesture control enables hands-free photo capture for outdoor sports & holiday gifts.