A company called Tech Business Land has come out with a new pocket size portable speaker, the airPie-PUMP. This new model is equipped with a clip to easily carry it along with your MP3 player or PMP, PDA or any other portable gadget with an audio out jack.
The dual speakers output 0.8W, they claim that it performs better than others with the same spec. It only takes one AA size battery but last 18hours. The design is curved and comes in three colors; white, yellow and blue, it measures only 91 x 31 x 32 mm and weighs 30.5g.