Rechargeable Finger Counter, IPX8 Waterproof Lap Counter, Silent 6 Channel Digital Counter with LED for Prayer, Swimming, Knitting, Gift Rechargeable - The new counter has a built-in rechargeable battery, no need to replace the battery, and no mechanical defects. It can be used for 3 months on a single charge. Waterproof - Rated IPX8 waterproof. The shell is made of high-quality ABS with a smooth texture. The silicone ring is adjustable, comfortable to wear, and secure fit. Powerful - Keys are silent and designed for long-lasting use. 6 channels can record different information, with a counting range of 0 to 999999 per channel. Supports reverse counting display. Full-screen LED backlight enables visibility in low light conditions. Wide Range of Uses - Ideal for counting tasks in various activities such as sports, fitness, knitting, crocheting, meditation, swimming, and more. Suitable for use in schools, laboratories, golf, airplanes, and other environments where accurate counting is needed.