Smart Ring for Men & Women with Wireless Charging Case – 24/7 Health Monitor Heart Rate & SpO2 Tracker Calorie Counter Sleep Analysis | Minimalist Design Long Battery Life | Fitness & Activity Tracker – Perfect Birthday/Anniversary Gift

Metal. Item Type: Smart Ring. Waterproof Grade: 5ATM. Model Number: R03. Function: Call Reminder. Activity Tracked: Activity Tracker, Steps Tracker, Distance Tracker, Calorie Tracker. Metrics measured: Heart Rate Monitor, Sleep Monitor, Blood Oxygen Monitor, Stress Monitor. Item Weight: 120. Case Material: STEEL. Certification: ce, FCC. Battery Capacity(mAh: 18mAh. APP: QRing. Waterproof Level: 5ATM. Main Feature: 1. Lightweight smart rings with charging case for a long battery life. 2. Smart rings have several exercise modes to help you exercise more scientifically. 3. Smart ring monitors your sleep as well as your heart rate. 4. Made of stainless steel for a smooth and comfortable fit. Specification: Name: JELLOO Smart Rings. Material: Stainless steel. Weight: 110g. Size: No. 9-19.2 mm, No. 10-20 mm. Battery Capacity: 15 mAh. Working Hours: 5-7 days. Standby Time: 15 days. Charging Time: 1 H. APP Name: QRing. Bluetooth Version: BLE 5.0. Compatible System: Android system 5.1 version o