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 sandy texture. The silicone ring is adjustable, comfortable to wear, and secure during use. Powerful - Features silent keys with a long service life. Six channels allow tracking of different counts, each with a range from 0 to 999999. Supports reverse counting display. Full-screen LED backlight enables visibility in low-light conditions. Wide Range of Uses - Ideal for counting in various activities such as fitness, sports, crafting, knitting, crocheting, classroom tasks, lab work, golf, aviation, and prayer. Suitable for use in schools, laboratories, gyms, and outdoor environments.