The Woojer – Silent Wearable Woofer connects to all audio devices and headphones that have a standard 3.5mm jack. Woojer’s polyphonic transducer converts sounds into inaudible, physical vibrations, and enables an immersive augmented reality sensation by making your body feel like it is exposed to high acoustic energy.It has rechargeable battery, which provides up to 4 hours of continuous music listening and even more hours of gaming.