There is not any aux input for just a 3.5mm jack however, you do nonetheless have entry Bodily buttons for playback, volume, power, pairing and focused party sound mode that turns up the volume nearly 11 (use this sparingly). An optional spare battery extends its roughly 12-hour play time. https://www.bluetoothspeaker.top/leun-portable-bluetooth-speakers-with-mobile-power-supply-built-in-microphone/