This is a 4 pack of AA, genuine Panasonic brand batteries. These are carbon zinc type of batteries suitable for toys, remote controls, cordless microphones, flashlights, and many other items. It's always a good idea to stock up on batteries for the holidays, or for emergencies. Super heavy duty batteries from the trusted Panasonic brand Its always good to stay stocked up on aa batteries - one of the most common battery sizes Carbon zinc battery with leak proof protection Genuine Panasonic brand batteries Includes 3 Packs of 4 piece set