This set includes two Kodak extra life AAA batteries (2x1.5V = 4.5V) with a screwdriver.

Instructions for Battery Replacement
Only an adult should replace batteries. Use a Phillips screwdriver to remove the screw. Unscrew and remove battery compartment lid. Gently remove the old batteries and dispose of properly.(Keep out of reach of children.) Following the polarity diagram, insert two new batteries. Replace lid and tighten screw.