How to switch off the sound: Simply press and hold the button [+/-] until the counter beeps, immediately release your hand and it will become silent. If you want the counter to beep again, perform the same steps again. Easy to use: press and hold the top button for three seconds to switch on, count and then press and hold the top button to zero, then press again for three seconds to switch off. It has been measured to count 5 times a second. 4-digit LCD display with additive and subtractive counters up to 9999 (no negative numbers); all come with a lanyard for easy carrying and can even be tied to a golf bag. The counters are compact and easy to use with one hand. The case is made of high quality ABS material for greater durability and the buttons are more sensitive at the same time. Wide range of applications: This counter can be used in a wide range of applications for everything you need to count. For example: docks, bus stations, schools, laboratories, gyms, competition venues and other public places. It can also be applied to record golf scores, restaurant counts, knitting, stock taking and everything else you need to count, let you can say goodbye to boring counting.