Features 1、STRONG AND PORTABLE: Smart ring is made of excellent stainless steel, strong, beautiful and elegant. With charging compartment, easy to charge, do not have to worry about no electricity when traveling, but also convenient for storage 2、SMALL AND LIGHTWEIGHT: Smart ring use lightweight design, ultra light body(only about 5g), no sense of wearing, light and thin wearing experience, so light that you may forget existence 3、MULTI FUNCTIONAL: The smart ring has a variety of functions, you can always tracking your sleep, temperature, steps and other physical health data, so that you can observe your health at any time. A fitness ring can also be an exercise ring, as that to tracking the number of steps you take during the day 4、SLEEP MONITORING: This ring can also detect your sleep time and sleep status during sleep to tell you about your sleep quality, useful and practical 5、NICE GIFT: This ring is a meaningful gift to any occasion or holiday such as birthday, anniversary, Thanksgiving, Christmas, or Valentine Day to your family Specification Item Type: Smart Ring Material: Stainless steel, electronic components, ABS Ring Battery Type: Lithium battery Ring Battery Capacity: 18mah Ring Battery Life: 3-5 Days Ring Charging Time: 60 Minutes Charging Compartment Battery Type: Lithium battery Charging Compartment Battery Capacity: 400mah Color: Cyan Package List 1 x Smart Ring 1 x Charging Case 1 x Charging Cable 1 x User Manual