The Logic3 i-Station Traveller is a miniture portable speaker system that delivers high quality sound from 2 speakers, with 6W RMS total power output. It is compatible with most portable music devices such as iPods, MP3 players and CD players and mobile phones. You can connect your device via the 3.5mm to 2.5mm adapter and listen to your music via the i-station's 2 dynamic speakers. The Logic3 i-Station Traveller comes in green, with 4xAAA batteries.