Comes with a 480mAh battery which offers 2.5 hours of continuous playback.MaterialAluminium AlloyDimension5.2*5.2*2.5cmColor(s)Dark Grey, Silver and GoldJBL

Battery: 480mah Number of Loudspeaker Enclosure: 1 Feature: Miracast Waterproof: no Communication: USB Speaker Type: SUBWOOFER Output Power: 2W Remote Control: no Cabinet Material: plastic Frequency Range: 60Hz-23KHz Display Screen: no Intelligent Personal Assistant: xiao ai Built-in Microphone: YES

Battery: 480mah Waterproof: no Cabinet Material: plastic Frequency Range: 200-18kHz Display Screen: no Charging Time (h):1-2h Working Time (h):4h