Our electronic scoreboard is designed for indoor games and sports,also for the in the . The scoreboard needs 5V DC to 6V DC to power up. A 100-240VAC input 6VDC output power adapter is already . A USB DC cable comes with the digital scoreboard, you can plug the USB cable to your power bank. Remote control needs 2xAAA batteries, please prepare it before you use the score keeper. The size is 7.2*3.7*1.4 Inch, Score Range from 0-99 The score board has red and blue color, blue for HOME team, red for GUEST team. Better than Flipper Score Keeper: No longer need to flip manually change the score.Way cheaper option than official scoreboards.Buzzer sound when press button on the remote,avoid the pessing mistaken.6 brightness levels control. The scores can see from 30ft away!Don't need to walk to the table to change your score as remote control can help you change your score at your game field! Porable small scoreboard: This digital keeper scoreboard is 7.2*3.7 inches and 1.1lbs,which just like the size of the adult plam, so it is easy to take around.Score range keep scores 0 to 99. Scoreboards for Indoor sports: Like Corn hole, Hockey,Wrestling,Roller Derby,Volleyball,Indoor squash,Badminton, Baseball,Coin-op foosball table,my gameroom shuffleboard table. Easy to use: When the score keeper, plugging in your socket with the power adapter. Also can plug in your power bank ,we provide the USB cable. It's easy to mount to wall with the brackets, and you can also put it on your tabletop easily with the ring holder. Click on add score (H+/G+) button of the remote, scores will change as you want.Remote control needs 2xAAA batteries, please prepare it before you use the score keeper.