Battery box requires 3 AA batteries (not included).  Also has an on / off switch.  The attached connecting cable is about 9 inches

AA Battery Power!

Each battery box has its own on / off switch.

Uses three AA batteries (not included)

Plug this battery box into an expansion board or effects board to power your lights.  Battery box can power over 20 lights at one time.

ALWAYS insert and remove these lights by holding the plug.  Removing the lights by pulling on the wire can result in damage.  To remove the light from a port, grip the plug with your finger nails and pull.