... Speaker, sound box, loudspeaker, Pop up speaker, hamburg speaker, mini speaker, mini loudspeaker, mp3 speaker, mp4 speaker, folding speaker, foldaway loudspeaker ... IPod, Speaker for MP3unit size: 53(dia)x36mmFeature and function :- Folding mini speaker work for any audio players, such as ... wonderful sound effect, Ideal to play music both indoor and outdoor.- Power from Built-in 3.7V rechargeable Li ...