The new lightsaber driver board. Plays crystal clear, loud sound AND drives 4 separate LEDs for awesome color mixing. Sounds and LED configuration can be loaded via a Micro SD card. Advanced users can even reprogram it over micro USB. Will fit in most standard sabers with 1.25" inner diameter and minimum 4" depth. Very low power used in the off state, no kill key needed during storage. Everything is powered with efficient switching regulators for longer battery life.