NO BATTERIES REQUIRED: This 4 digit number counter is no batteries required, which can count up to 9,999. EASILY RESET: With a reset knob on the counter, it is easily reset by turning the knob. SMALL SIZE: The counter is of small size, which fits comfortably in hand. WIDELY USE: It could be used for a variety of athletic activities or training, such as golf, running. White numbers on a black background, the data can be easily read. Product size: diameter is about 4.5CM, thickness is 3CM Weight: 66g Color: Silver Package includes: 4pcs*counter Caution The hand-press button counter, with a durable metal casing, beautiful appearance and comfortable buttons, is widely used for various statistics, such as the number of people attending a meeting. Traffic flow. Aircraft count. Laboratory analysis counting. The counter has a long service life and is reliable. It has the advantages of long service life, reliable, easy to use, easy to carry, and can be cleared, etc.