The rechargeable batteries will Supply you with around twenty five hrs of play time for each juice-up. It's also possible to us your Marshall to answer, decline, and end calls. Lame. Not your fault even though, they put the "Phone" button correct on there beside the speaker's bass and https://www.bluetoothspeaker.top/jb-pulse-5-outdoor-portable-bluetooth-audio-colorful-light-waterproof-speaker/