Raz Imports 98250 - 4.5 volt Electric Adapter Replaces 3 AA Batteries (3416165 MAGIC POWER 3-AA ADAPTERS) Used with Raz Imports Magic Power System 6-Pigtail Power System or3 Pigtail Power System. Will not work without power system Sold separately Converts battery operated items into electric charge. Cost effective alternative 4.5 volt - Equivalent To 3 AA Batteries Black Wiring. Plastic construction