Mutant M-Sync Portable Rechargeable Bluetooth Speaker Take the M-Sync anywhere, and everywhere! The built-in battery lasts up to 8 hours for music playback, and charges with USB, meaning you can charge from anywhere! Take the M-Sync around your home, or out on the road! Connect via Bluetooth from your smartphone, tablet, or PC, or plug in via the 3.5mm jack AUX plug. Control your music with soft-touch controls. When you turn on the speaker the controls light up, ready to go. When you're not using the controls, the lights fade out again, blending the speaker into the background. Make and answer calls using the built-in microphone! The high quality microphone will deliver clear sound to the other end of the call, and you can comfortably make and answer calls from a distance! Big sound in a little package? Yes! The bass reflector built into the bottom of the speaker redirects the sound, and creates a higher quality listening experience while staying portable. No need to sacrifice mobility for sound any more!