Ⅰ. Rechargeable Finger Counter, IPX8 Waterproof Lap Counter, Silent 6 Channel Digital Tasbih Counter with LED for Prayer Swimming Knitting Gift fg2025031 Ⅱ. Rechargeable - The new counter has a built-in rechargeable battery, no need to replace the battery, no mechanical defects. It can be used for 3 months on a single charge. Ⅲ. Waterproof - With IPX8 certification rating. The shell is made of ABS with an excellent sandy texture. The silicone ring is adjustable, more comfortable to wear and not easy to fall off. Ⅳ. Powerful - The keys are silent and have a long service life. 6 channels can record different information, and the counting range of each channel is 0 ~ 999999. Support inverted display. The full-screen LED backlight allows you to use it even at night. Ⅴ. Wide range of uses - Great for any time you need to count, such as statistics, sports, scoring, knitting, crocheting. Can be used in schools, laboratories, golf, casinos, bars, prayers, airplanes, gambling.