Black stainless steel fitness ring with sleep, steps, and water resistance

This smart ring functions as a fitness tracker, monitoring sleep patterns and counting steps. It offers over 20 exercise modes to support various physical activities. The ring is waterproof with an IP68 rating, making it suitable for use in different environments. It is rechargeable via USB and features a stainless steel design with a retro fashion style in black. The ring size is 10#19.9mm.