Digital Scoreboard Battery Powered Indoor Tennis Scoreboard : Electronic scoreboard: can display GUEST score, number, and right to provide; There are 5 scoring modes: basketball, , volleyball, , judo; Power: battery powered, long standby, 30 meters distance; standard charging interface, two power supply methods (Battery status reminder function) LED Display: Super LED display, is clearly visible outside long service life Portable: and thin, the thinnest part is 23mm; , easy to carry Specification: Shell material: profile frame, ABS corner; Appearance: Black Display: 6 red, 4 yellow, 1 Brightness: 3000CD Dimensions: 37,5 cm x 25 cm x 2,3 cm/14,76 9,84 0,91 inch Character Height: 3 inches 1,8 inches Weight: 1060g : remote 2.4G; Control distance: 30 meters; Visual distance: 21 meters; sound: ; Volume: 90dB; Power and Voltage Interface: USB, 5V/2A Charging Power: W Charging Current: 1,5A Battery Powered Power: 1,9 in Battery Power Current: 0,5A Battery Voltage: 3,7 V Battery type: 18650 (can hold 13 cells, included) contains: 1 scoreboard 1 remote 1 1 set of installation accessories