[Easy to Use] --- The top button of the counter is used to turn the counter on or off. Use the plus button and minus button to count up to 0-9999, easy to use.[Replaceable Battery] --- The battery cover is removable, and the battery power supply is an AG13 button battery. When the battery is used up, you can buy a battery that matches your needs, which is easy to replace.[Practical Tool] --- You can get 2 portable digital counters Compared with traditional counters, electronic digital counters have the characteristics of light weight, easy to carry, low power consumption and more stable work.[Humanized Design] --- The counter has a voice prompt and can sound when counting. If you don't like the prompt sound, please press and hold the +/- button for 5 seconds to turn off the sound. The counter comes with a black lanyard that you can wear around your neck or attach to your backpack for easier carrying.[Wide Application]---The electronic digital counters can be used in many public places