Bewinner ri2h1ntckb-11 - Size 18 Inner Diameter: Approx. 18.9mm / 0.7in,

1. Durable and Lightweight: Made with stainless steel, durable, and elegant in appearance. Ultra lightweight design can provide a comfortable wearing experience. Thin and light, you may even forget it's there. 2. Versatile Use: The smart health ring has various functions,monitoring your body temperature, fitness, sleep, and step counting, allowing you to monitor your health data at any time. 3. Convenient and Practical: Besides health monitoring, this health ring also serves as a fitness tracker, accurately recording your daily step count to help you stay active. 4. Sleep Mornitoring: The smart health ring can help detect your sleep time, sleep status, to tell you how good your sleep quality is. 5. Ideal Gift: The health ring tracker is a perfect gift choice for any occasion or holiday, such as birthdays, anniversaries, Thanksgiving, Christmas, or Valentine's Day. Specification: Item Type: Smart Health Ring Material: Stainless Steel, Electronic Components Ring Battery Type: Lithium Battery (Included) Ring Battery Capacity: 18mAh Ring Battery Life: Approx. 3-5 Days Ring Charging Time: 60 Minutes How to Use: First download the ring APP, after the download is completed, you can connect to use, ring boot mode: Starts when fully charged packing list: 1 x Smart Health Ring 1 x Charging Cable 1 x User Manual