Manual Counter- Includes 4 pieces four-digit counters, no batteries required, don't worry about the clickers can't be used after a long time, which can count up to 9,999. Portable Mechanical Counter- Each counting counter come with a durable black lanyard, you can hang it on your neck, wrist or backpack, easy to carry. besides the ring on the counter to put your finger through, its small size fits your hands perfectly. Wide Applications- The mechanical hand counters could be used for a variety of training activities, eg school, laboratory, competition, casino, bars, golf and racing etc. and also suitable used for all kinds of statistical data. Easy to Use - Click the button on the clicker counter to start counting, it is easily reset by turning the black reset button on the counter.< /p> Durable and Practical- Our hand counter is made up of metal case and chrome planted ring, lightweight and durable, can be used for a long time. bring more convenience to carry to anywhere. Product size: 45mm*30mm Due to factors such as manual measurement and display differences, there may be slight differences between individual products and pictures, please forgive me.