Underneath the waterproof flap are most of the inputs and outputs that you’ll need for charging and connecting to your speaker. While it may not be the most rugged or portable solution, I find the Movement X600 best suited for home environments. Its aluminum Develop and exceptional grille design https://www.bluetoothspeaker.top/factory-private-mold-bluetooth-speaker-rgb-speaker-2200mah-battery-portable-speaker/