Can be operated using 4 x AAA batteries or by the included mains charger. This mini portable speaker set is supplied complete with a holding cradle and mains charger. Handset specific cradles are available for most current phone models. Please purchase the phone cradles separately. The mini portable speaker is sleek and stylish yet offers the practical benefit of its compact foldaway design. With up to 1 hours usage time it is the perfect speaker dock for those who just love to share their music, anytime, anywhere.