1. Portable ball counter makes counting easy 2. When counting, the thumb rolls down to start counting, the scroll wheel is smooth, and the operation is silent 3. Oled display screen, displaying battery level and counting 4. Type-c charging, long-lasting battery life, built-in 75mah rechargeable battery 5. The ring can be adjusted in three gears, which is convenient and practical Product name: Ball counter Battery capacity: 75mah Product specifications: Adjustable (1st gear 18mm, 1st gear 20mm, 1st gear 22mm) Color: A:Black Material: ABS Package Contents: 1 * Counter 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.