The rechargeable batteries will Supply you with around twenty five several hours of play time for every juice-up. You may also us your Marshall to reply, decline, and stop calls. Lame. Not your fault although, they place the "Phone" button correct on there beside the speaker's bass and treble https://www.bluetoothspeaker.top/china-supplier-new-brand-led-lighting-speaker-haibadz-bluetooth-speaker/