RVFM 64 Ohm 50mm Ultraslim Speaker 0.2W

50mm-Ultra-Slim-Mylar-Cone-Speakers-RVFM-35-0127-p-This-miniature-ultra-slim-loudspeaker-is-just-11mm-in-thickness-p-RVFM-64-Ohm-50mm-Ultraslim-Speaker-0-2W

Price: 2.38 from Rapid Online Rapid Electronics Ltd.