Closed Back Headphones That Seal the Sound in Treat your ears to some good audio with the Sony MDR-ZX110APP Pink Headphones. Thanks to the 30mm dynamic driver units, you receive a powerful sound from these headphones. The 98dB per mW high sensitivity of the Sony headphones gives you distortion-free sound even at high volumes. Receive top-quality sound across a broad spectrum thanks to the frequency range of 12 to 22,000 Hz. These Sony MDR ZX110APP Pink headphones are of the closed back type, ensuring that the sound does not leak out to,give you top-quality audio. Foldable Design for Easy Storage The Sony headphones have a foldable design that allows you to easily store them or carry them around to the gym or office. With its 1.2m long, tangle-resistant cord, you can easily listen to music without worrying about your headphones getting pulled off your head. Adjust volume at the touch of a button with the in-built remote controls. Use the on ear headphones with battery operated devices like iPods and smartphones thanks to the low impedance of 24ohms. In a cool white shade, these headphones have a very trendy look.