Feature:1. Beautiful And Sturdy: Smart health ring is made of premium aluminum alloy and ceramic, sturdy and reliable, beautiful and elegant. With its lightweight design, you may forget it's there.2. Multi Function: Health tracker ring has multiple functions, body temperature, sleep, step recording, etc. It detects your sleep time and status, allowing you to observe your health at any time.3. Pedometer Function: This smart ring health tracker can also be a sports ring, because it can record all your steps in a day. You can also wear it to follow the beat of our fitness trainer's movements.4. Rechargeable: Fitness tracker ring built in 20mAh battery with 300mAh charging compartment and charging cable, you don't need to worry about charging when you are outdoor.5. Gift Choice: This smart ring is a meaningful gift, suitable for any scene or holiday, such as birthday, anniversary, Thanksgiving, Christmas or Valentine's Day. Give your family or friends a surprise.Specification:Item Type: Smart Health RingMaterial: Aluminum Alloy, Ceramic, Electronic Components, ABSRing Battery Type: Lithium Battery (Shipped with Built in Battery)Ring Battery Capacity: 20mAhRing Battery Life: 3 to 5 DaysCharging Case Battery Type: Lithium Battery (Shipped with Built in Battery)Charging Case Battery Capacity: 300mAh.Package List:1 x Smart Health Ring1 x Charging Case1 x Instruction Manual 1 x Charging Cable Note:Manual measurement, please allow some errors.