Advanced Touch Control: Experience seamless counting Smart Ring, featuring touch-sensitive buttons that are perfectly silent and designed to fit your finger for unlimited counting. Bluetooth Connectivity: Easily connect to your smartphone via Bluetooth to monitor your counting data in real-time, ensuring you track of your progress. Clear OLED Display: The OLED screen displays both battery life and count numbers. A self-locking feature prevents accidental data loss, making it reliable for all your counting needs. Efficient Charging & Long Battery Life: Equipped with a Type-C charging port and a robust 75mah battery, our ring offers extended use without frequent recharges. Adjustable Fit: Customize the fit to your comfort with three adjustable sizes - 18mm, 20mm, and 22mm, ensuring it fits perfectly on any finger. Color: Black Material: ABS Package Contents: 1 * multi-function ring electronic counter set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.