10-Player Handheld Quiz Game Buzzer System with 25ft cables for WINDOWS (Mac available - see separate listing) Works with your WINDOWS computer. (Mac version available. See our 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 our separate listing.)