Smart Ring Health Tracker with Charging Case,Sleep,Heart Rate & Blood Oxygen Monitor, 5ATM+IP68 Waterproof Fitness Ring, No Subscription,3-7Day Battery,iOS & Android Compatible for Men Women Black 8#

Price: $39.99
(as of Apr 11, 2026 04:26:51 UTC – Details)

Product description

1 Size Map 2 Step1 for right size 3 Step2 for right size 4 Step3 for right size 5 Step4 for right size

ZERO MONTHLY FEES& PROTABLE POWER: Unlike other smart rings, Casatelier offers full access to your health data with no app subscription required. Includes a premium Charging Case (plus 2 backup cables) to extend playtime（30 days）, making it the perfect travel companion. Enjoy 3-7 days of battery life on a single charge and recharge on the go.
MASTER YOUR SLEEP QUALITY: Designed for comfort, this ultra-lightweight sleep tracker is less intrusive than a watch. It automatically monitors your sleep stages (Deep, Light, REM) and naps, providing a comprehensive sleep score. Wake up to detailed insights and optimize your rest without wearing bulky devices. Sleep data will be delayed in updating; The data will be synchronized to the APP display about 30 minutes after waking up
24/7 HEALTH GUARDIAN: Equipped with advanced sensors for continuous Heart Rate, Blood Oxygen (SpO2), HRV and Stress monitoring. Track your body’s recovery and daily trends via the user-friendly App. Supporting Data Sharing, it allows you to care for family members by viewing their health reports remotely
FITNESS TRACKER FOR EVERY MOVE: Whether you are running or swimming, this fitness ring has you covered. Rated 5ATM & IP68 waterproof, it withstands depths up to 50 meters. Tracks steps, calories, and distance accurately. Note: Please select the correct size using the sizing guide before purchase
SMART CONTROL AT YOUR FINGERTIP: More than just a tracker. Use the ring as a Remote Control to take photos or change music tracks on your phone. Features OTA updates to keep your ring current and flickering reminders for incoming calls and messages, compatible with both iOS & Android devices
ESSENTIAL TIPS FOR SLEEP DATE: To ensure data integrity, the ring must fit snugly on your index finger (no gap between ring and skin). The sensors require close contact to read your pulse and sleep stages. Sleep data is not monitored during the day, and the defaultsleep monitoring is from 9:00 PM to 11:00 noon the next day.Please Note: If the ring spins freely, the sensors may lose contact, resulting in gaps in sleep data. Please sync with the App immediately after waking up to secure your data.