HGTRH Smart Ring - Heart Rate Tracker Sleep Tracker

Product specifications: Name: Smart Ring Color: Gold, Black Main functions: Step counter, distance, calorie calculation, heart rate, blood oxygen saturation, stress, sleep tracking, multiple exercise modes Battery type: Polymer Ion Battery Capacity: 15mAh Charging method: magnetic charging Water resistance rating: 5 ATM Charging time: about 1 hour Battery life: 5-7 days use, 15 days standby Available languages: multiple languages Material: Aluminum Alloy Application: QRing Package includes: Ring User manual Charging cable Packaging box