irrespective of what you store in a day, you will know that the battery can stay charged for a long term while you depart home! The portable bluetooth speaker is geared up with a effective battery that can offer electricity on your all-weather pumping. Charge, exit, exit! Product call: transportable audiotype: multimedia speakertheoretical electricity: 4wmaterial: aluminum alloycolor: silverspeaker control: knobinterface: usb/auxpower: usb poweredsize: 261 × 36 × 44mmweight: 432gtips1, please test the size and colour before purchasing. 2, please note that there might be a little shade difference due to specific display. Three, when you have any trouble, please experience unfastened to touch us.