SHS3300BK/10 27mm drivers/ open-back ear hook highlights 27 mm speaker driver compact for wearing comfort yet big enough to deliver crisp, powerful sound, The 27 mm speaker driver is a perfect size for non-distorted listening enjoyment. Bass beat vents bass beat vents allow air movement for better sound with a Deep rich bass. Comfort ear cushions the special shape and luxurious materials used for the ear cushions of these Philips headphones ensure a perfect fit for maximum comfort. They prevent audio leakage and enhance bass performance too. The ear cushions are shaped in such a way that they perfectly align with the area around a person's ear. Contoured ear hook the ear hook stays put behind your ear even when you're on the move, keeping the earphone comfortably in place and sounding great. Is the part contacting the back of your ears and keep the headphones on your ears neodymium magnets Neodymium is the best material for producing a strong magnetic field for greater sensitivity in a voice coil, better bass response and Higher overall sound quality. Asymmetric cabling system This simple yet highly effective solution to cable tangling Works effectively By enabling you to hang the cable behind your neck instead of under your chin. 1. 2M cable The ideal cable length to give you the freedom to put your audio device where you want