SubPac M2 aims to transform you into the next sound bionic human, with the most immersive experience available. SubPac M2 is a backpack that transfers the physical dimension of sound directly to the body, letting you feel and not just hear the low frequencies of whatever youŽre hearing, music, a movie, or a video game. So you still get that special bass feel without having that hard thump on your eardrums. It features a control box that allows you to adjust the bass intensity, it also includes the 3,5 mm jack receiver and you also get a 4.0 Bluetooth system that gets your music streaming. With a Li-ion Battery you get up to 6-8 hours of continuous use. SubPac M2 brings the bass to your body and takes your music, gaming, home theater or virtual reality immersion to a whole new level, adding a powerful new sensory element to any audio experience.