Aonal 4pack Tally Counter Handheld - 4 Digit Number Lap Counter Manual Mechanical Clicker with Finger Ring Sliver HIGH QUALITY & CONVENIENT: Each clicker counter has a metal cover, beautiful and durable, comfortable handle. It's small enough to fit in your pocket. So it's convenient to carry counter clicker. The most important point is the long service life of this tally counter. ADJUSTING RANGE: Lap counter only need a gentle push of the thumb counts from 1-9999 in increments of one by just pressing count button. WIDE APPLICATIONG SCENARIOS: Widely used in various data statistics, conference attendance, traffic flow, aircraft Numbers, analysis count, cargo count, and other statistical occasions. In addition to aboves, pitch counter still can help children learn to count. SIMPLICITY OF OPERATOR: Easy-turn reset knob brings you back to 0000, rotate clockwise few times to reset reading, simple to operate, one-hand operation. NO BATTERIES REQUIRED: The internal mechanical structure of this stitch counter does not require a battery. So you can use it at any time, without worrying about the lack of electricity.