Feel the power of dynamic sound, with the Sony ZX110 On-Ear overhead noise cancelling headphones - Black. You can pair these headphones with your favourite music player, MP3 players, Walkman or even your smartphone. These headphones feature 80 hours of battery life, and are lightweight and folding for your comfort. Features - Lightweight, folding design for ultimate music mobility - 10-22,000Hz frequency range - Padded earcups for comfortable listening - Smartphone-compatible with in-line remote mic - Integrated Noise cancelling technology - 80 hours of battery life Specifications Weight 150 g (including battery and excluding cord) Closed Type: Yes Driver Unit: 30 mm dynamic - Dome type Frequency Response (Hz): 10-22,000Hz Sensitivities (dB/mW): 110 dB/mW - Power off, 115 dB/mW - Power on Impedance (Ohm): Power ON 220 ohm, OFF 45 ohm (at 1kHz) Cord Type: Y-Type Cord Length: 1.2M Plug: L-shaped gold-plated four-conductor mini Magnet: Neodymium Unit of Microphone: Electret Condenser Microphone Direction of In-Line Microphone: Non-directional