Thank you for viewing! #KisaRa's Listings [Ships within 24 hours] New, Unopened Smart Ring [Color] Silver [Size] US 11 [Smart Ring - Health Management] Utilizing the latest technology, health management is now easier! The ring has three sensors: an optical sensor, a weight sensor, and a red light sensor. By simply wearing it on your finger in daily life, you can record health data such as sleep, exercise, and steps, and reflect it in real-time on the dedicated app, making it easy to understand your health condition. The ring's design is stylish and comfortable to wear, and it won't be a burden even if you wear it all day long, making it a part of your everyday fashion. [Sleep Management - Scientifically Analyzed] When you wear the ring at night, the app graphs detailed sleep data such as light sleep, deep sleep, REM sleep time, and the number of times you wake up. Based on scientific algorithms, the analysis makes it easy to understand your sleep cycle and provides tips for improvement. When you wake up in the morning, you can see your sleep performance at a glance, making daily health management smoother. [8 Exercise Modes - Measure Exercise Amount] The smart ring can also be used as an activity tracker, measuring your activity in real-time through the app. It features 8 exercise modes: jogging, cycling, jump rope, walking, hiking, yoga, golf, and dance. Each mode records data corresponding to the specific exercise and calculates calories burned, distance, steps, speed, and more during exercise. Step statistics are visualized on the app daily, weekly, and monthly, helping you maintain your exercise motivation. [Magnetic Cable - IP68 Waterproof - Lightweight] It has high battery performance, lasting up to 10 days (in standby mode), freeing you from the hassle of daily charging. When charging, simply bring the ring close to the included magnetic cable, making it very convenient. Moreover, it charges fully in about 2 hours. It also has IP68 waterproof performance, so you can use it without worry on rainy days or when washing your hands. Furthermore, the ring body weighs only 3-4g, providing comfort so light you'll forget you're wearing it.