1、PREMIUM ALUMINUM ALLOY: Crafted from premium aluminum alloy, it is both sturdy and elegant, combining durability with a stylish aesthetic that complements any outfit. 2、LIGHTWEIGHT: The ring features a lightweight design that makes it feel almost non existent on your finger, providing a comfortable wearing experience that you might even forget it's there. 3、CONVENIENT CHARGING: Included with the ring is a charging cable, ensuring that you never have to worry about running out of battery while enjoying outdoor activities. 4、HEALTH RING: Offers various features such as temperature, sleep tracking, and step counting, allowing you to keep an accurate watch on your health and fitness throughout the day. During sleep, it detects your sleep time, sleep status, and lets you know the quality of your sleep. 5、THOUGHTFUL PRESENT OPTION: Designed to be a meaningful present, the smart ring is suitable for any occasion or holiday, including birthdays and anniversaries, making it an ideal choice for loved ones. Item Type: Smart Ring Material: Aluminum Alloy Ring Battery Type: Li Battery (Built in) Ring Battery Capacity: 18mah Color: Black 1 x Smart Ring 1 x Instruction Manual 1 x Charging Cable