10-Player Handheld Quiz Game Buzzer System with 10ft cables for WINDOWS (Mac version available - see separate listing) Works with your WINDOWS PC. (Mac version available - see separate listing.) Players race to answer quiz questions by pressing their buzzer button. The name of the first player to "Buzz-In" is displayed on your computer screen which can be projected for viewing by audience and all participants. Automatic lock-out of all but the first player to "Buzz-In." Includes free EASY QUIZ game software and carry sack. (EASY QUIZ requires free installation of Java 8 from java.com.) Also compatible with 3rd party quiz software that accepts number key input such as Game Show Presenter. Connects to your WINDOWS computer with USB - No drivers or external power source needed. (Mac version available - see separate listing.)