This new sonic screwdriver is larger than previous ones. Is complete with a LED green light and sound effects. Has spring loaded extending action just the like the Dr's. This was an essential tool for the Dr in his travels. Requires 3 L1154 type batteries. The 12th Doctors Second Sonic Blue Metal Screwdriver. Metal version with 4 lighting colors, 6 modesfixed green, flashing green, fixed blue, flashing blue, fixed white, fixed red. The 12th generation electroplated version has an additional incandescent light and a red light mode compared to the regular version. The difference ...