Crush on anything that doesn't have the technology and comfort the Skullcandy Crusher offers. Custom-tuned REX40 driver is designed to deliver an extremely smooth frequency response with minimal distortion. Auto-On/Off smart circuit will turn off your amp within 10 seconds when the music stops or your headphones are unplugged. Sensation55 Driver delivers powerful and realistic bass experience that transforms your audio into bass you can feel. Adjustable bass controller on left cup for a perfect sound. Ergonomic design offers flexibility and clamping pressure for a perfect fit. Three-panel cushion ear pillows are wrapped in high quality synthetic leather that sits flat, creating a perfect seal around your ear. Detachable cable eliminates tangling, increases longevity, customizes your look, upgrades your mic and can be used as an AUX cord. Single button in-line remote with mic delivers ultimate clarity and functionality with most devies. Foldable hinges that are designed to break down to 40% its size. Fits perfect in the microfiber travel bag.