The rechargeable batteries will Provide you with around 25 several hours of play time per juice-up. You can also us your Marshall to reply, decline, and conclusion calls. Lame. Not your fault even though, they set the "Phone" button suitable on there next to the speaker's bass and treble https://www.bluetoothspeaker.top/inalambrico-wireless-speakers-with-cellphone-bluetooth-speakers/