Accurate CountingThe manual counter is flexible and can count accurately and clearly. The number skipping is accompanied by a clear clicking sound, and the counting is not easy to wrong or miss. The manual counter has a maximum count of 9999 and has a reset knob. Application RangeIt can be used for sports fitness counting, inventory counting, people counting, traffic counting, golf counting or laboratory analysis. It can keep counting at -20~60. Mechanical Principle Manually click on the mechanical principle, no battery is needed, and the reset knob can be used to reset after use. Easy to Use It is made of metal material, stable and durable; it has a D-shaped metal ring, which can be hung on the fingers through the D-ring, or it can be worn with a rope and worn on the wrist or neck. It can be used by both adults and the childrenchildren can also be the referee. Specification Manual counter is 30x46mm (2.02.01.6in), which can be held comfortably in the hand or put in the pocket.Full set contain 3 counters for easy counting at the same time. Hand Tally Counters, Mechanical Palm Click Counter Count Clicker for Sport Coach Casino, Clearly and Accurately(3pcs)