INCLUDES SOFTWARE! 1. No monthly fees and no internet required! 2. Both computer and Master Controller Remote can control the wireless quiz buzzers. 3. Software support Power point slide, you can easy to create your own custom questions/games. 4. First player who buzzed in locks out the other contestants. 5. The buzzer light up and buzz invoice to identification of who buzzed in first. 6. Yellow, Green, Blue, Red and Black color optional. 7. Aluminum Carry case for 4, 6, or 8 buzzers with foam hole for each buzzer. 8. Range support 100 meters