1、Stainless Steel and Rechargeable: Made of premium stainless steel, this smart health ring is not only sturdy, durable, and aesthetically pleasing but also comes with a charging case for convenient charging. You never have to worry about running out of battery while traveling and it facilitates easy storage. 2、Compact and Lightweight: With its lightweight design, this wearable smart ring is incredibly light, weighing only around 5g. You won't even feel like you're wearing it. Its slim and lightweight design offers a comfortable and barely noticeable wearing experience. 3、Sleep Monitoring: This smart ring health tracker can analyze your sleep time and sleep quality during your sleep, providing insights into the quality of your sleep. 4、Multifunctional: This smart ring can monitor various health data including sleep and body temperature, allowing you to observe your overall physical well being. It can also serve as a fitness tracker as it can record your daily steps. 5、Wonderful Gift Choice: This smart health ring is a meaningful gift suitable for any occasion or holiday, such as birthdays, anniversaries, Thanksgiving, Christmas, or Valentine's Day. Item Type: Smart Health Ring Material: Stainless steel, electronic components, ABS Weight: Approx. 107g/3.8oz Color: Cyan Ring Battery Type: Lithium battery (shipped with built in battery) Ring Battery Capacity: 18mAh Ring Battery Life: About 3 to 5 days Ring Charging Time: 60 minutes Charging Case Battery Type: Lithium battery (shipped with built in battery) Charging Case Battery Capacity: 300mAh 1 x Smart Health Ring 1 x Charging Case 1 x Charging Cable 1 x User Manual