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 up to 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. Powerful - Features silent buttons with a long lifespan. Six channels can record different data, each with a counting range of 0 to 999,999. Supports reverse counting display. Full-screen LED backlight allows for easy use in low light. Wide Range of Uses - Ideal for counting tasks in various activities such as fitness, sports, crafting, knitting, crocheting, education, laboratories, golf, aviation, and prayer. Suitable for use in schools, pools, and outdoor environments.