Rechargeable - The new counter has a built-in rechargeable battery, eliminating the need for battery replacements and reducing mechanical issues. It can operate for up to three months on a single charge. Waterproof - Rated IPX8. The device features a high-quality ABS shell with a smooth sandy texture. An adjustable silicone band ensures a comfortable fit and helps prevent the device from slipping off. Powerful - Equipped with silent, durable buttons. Offers 6 independent counting channels, each with a range of 0 to 999,999. Supports reverse counting display. Full-screen LED backlight enables visibility in low-light conditions. Wide Range of Uses - Ideal for counting tasks in various settings such as education, research, sports, scoring, knitting, and crocheting. Suitable for use in schools, laboratories, golf, casinos, bars, religious activities, aviation, and similar environments.