Accessory kit to light the sensor in the head for 1/100 scale MG kits. Includes parts for Char's Zaku II, J. Raiden Gelgoog, and Z-Plus test color version. Includes 3 LEDS (2 colored, one clear) plus magnet Hall-effect switches (pass a magnet over the switch to activate). You need CR1216 batteries. Note: When you use this set on the Z-Plus it can no longer transform.