... , 3.built-in lithium battery wireless portable bluetooth speaker ,mini for mobile/mp3/mp4,aluminum Specification* Power: 3W * Signal To Noise ... hours max* Last Time: 2-4hours (via bluetooth to play)* Driver Unit: 56mm, 4 Ohm ,3W*Dimension:(D)65MM*(H)50MM*Power ... .22kg * Aluminium housing to be more attractive and fashionableFeature *supports for A2DPV1.2 and AVRCPV1.4 Profile*With high level of ...