Clicker counter is small, compact, and accurate. Includes 1 LR44 battery and a lanyard. Long press the "ON/OFF" button for 3 seconds to turn on the counter. When the screen displays "0", press and hold "ON/OFF" for 3 seconds to turn off. Add/Subtract Counter: Press the "+" button to increment by one, press the "-" button to decrement by one. Maximum display value is 9999. When the display shows "0", pressing the "-" button will change it to "9999". To enable or disable the clicker sound, press and hold the green or red button for 3 seconds. Ideal for various applications such as warehouses, stations, streets, people counting, vehicle counting in public areas, and sports like golf. Color: Black Material: ABS Size: 5 x 4 cm Package Contents: 2 x Counter Clicker Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.