The Smartphone Speaker 2.0 in Copper can be used alone or in tandem with the Smartphone Projector 2.0. Ready assembled, the innovative cardboard speaker is powered with 4 x AA batteries to give up to 30 hours playback. Plug smartphones, MP3s, laptops or tablets into the speaker wherever you are: picnics, parties, even on the beach for music wherever you are. Features: Smartphone Speaker 2.0Copper Use alone or with the Smartphone Projector 2.0 Ready assembled Cardboard with metal grill Ideal for use outdoors Dimensions: H: 10.5cm x W: 10.5cm x D: 10.5cm