Mini Mylar Miniature Speaker 16ohm 0.25watt-29mm Diameter [PACK OF 2]

If you want to get some sound out of your project but have a tight space budget, this is a good way to do it. This 0.25W, 16Ohm speaker is only 29mm in diameter and just over 9mm thick, the same kind you might find in one of those “talking greeting cards”.