INSTALLING BATTERIES:
1)Remove the battery compartment cover from the bottom of the Slide Viewer.
2)Insert four (4) AA batteries (not included) into the designated spaces, making sure the positive and negative connections are aligned correctly with the polarity markings.
3)Put the battery compartment cover back to its original position.
4)Alternatively, an AC/DC 6V 500mA power adaptor (not included) can also be used by plugging it into the Power Jack.