The rechargeable batteries will Offer you around twenty five hours of play time for each juice-up. It's also possible to us your Marshall to reply, decline, and end calls. Lame. Not your fault however, they put the "Phone" button appropriate on there close to the speaker's bass and treble https://www.bluetoothspeaker.top/flip6-speaker-bluetooth-outdoor-waterproof-wireless-bluetooth-speakers/