[Easy to use] --- The button on the top of the meter is used to turn the meter on or off. Use 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 source is an AG13 button cell. When the battery is discharged, you can purchase a battery that suits your needs and is easy to replace. [Utility] --- You can get 2 portable digital counters. Compared with traditional meters, electronic digital meters are light, easy to carry, low power consumption, The work is more stable. [Humanized design] --- The counter has voice prompts and will make a sound when counting. If you don't like the sound, please press and hold the +/- button for 5 seconds to turn off the sound. Counter with Lanyard Available in black, you can wear it around your neck or clip it to your backpack for easy portability. WIDE APPLICATIONS---Electronic digital counters can be used in many public places such as schools, laboratories, competitions, stadiums, training events, and can also track shots of foot. Golf, baseball field, store traffic, etc. Features: The instrument uses an LCD display, which makes statistics more intuitive and convenient. Compared with traditional instruments, portable electronic instruments are lightweight, easy to carry, and more stable when working. Can be used in various situations, such as ball games, swimming or running, people counting, product counting, etc. Specifications: Color: Black Material: ABS Battery specifications: AG13 does not include battery Counting range: 0-9999 Package Contents: 2 * Portable Digital Counter Description: Press the ON/OFF button and the device will display 0. When counting, please press the "+" or "-" key. If the number exceeds 9999, please press the ON/OFF button for 5 seconds to reset. When the meter shows 0, press and hold the ON/OFF button for 5 seconds to turn off the meter. Note: +/- Button colors are randomly distributed and may differ from the image! ! ! The instrument has voice prompts that can be turned on/off. If you don't like the chime, press and hold the / - button for 5 seconds to turn off the meter sound. Note: The data are all manual measurements, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical item received Delivery quantity: (according to the main picture)