What batteries does the Simple Sway Swing require and how do I install them?

The swing requires four D (LR20-1.5V) cell batteries, which are not included. Open the battery compartment lid by inserting a screwdriver into the coin slot, insert the four batteries, and check that they are put in correctly—your swing will not run if the batteries are inserted backwards. The recommended type is alkaline disposables, and you should never mix battery types.