The Viper Illumiscore Illuminated Dart Scoreboard gives you the best visibility during your games, so you can see what your next shot needs to be. The included special pencils glow brightly when the board is lit. Clean up is a breeze, as the board wipes clean after every game. The scoreboard is powered by 4 AA batteries or an optional adapter for maximum versatility in power options. An included game manual can put a new spin onto old favorites.