Features 1. Design: Made of high-quality aluminum alloy and ceramics, sturdy, durable, and elegant in appearance. The IPX8 has a waterproof depth of up to 100 meters, making it perfect for swimming, surfing, sailing, and deep-sea diving. 2. Convenient To Carry: With a comfortable, fashionable and lightweight design, an ultra light body, and a lightweight wearing experience, you can be more flexible in various sports and movements. 3. Multifunctional: The smart ring has multiple functions, which can monitor sleep, step count, heart rate, blood pressure measurement, blood oxygen measurement, automatic health monitoring, etc. at any time, allowing you to constantly monitor your physical health status. 4. Smart Ring: The smart ring has a capacitance of 23mAh and is equipped with a charging compartment with a capacity of 400mAh, so there is no need to worry about running out of power. Simply place the ring into the charging compartment for easy use. It can also control the camera function of the phone, just gently shake it to take a successful photo. 5. Exquisite Gift: This ring is a meaningful gift suitable for any occasion or holiday, such as birthdays, anniversaries, Thanksgiving, Christmas, Hanukkah, or Valentine's Day. Specification Material: ABS Product model: 16, 18, 20 Color: Black, White Size: 9 x 9 x 4.8 cm Weight: 124 g Package Include: 1x Smart Ring Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.