Sony Noise Cancelling Headphones MDRZX110NC

Noise Cancelling reduces up to 95% ambient noise Swivel, folding design 30mm dynamic driver unit 80 hours battery life Works even when battery is depleted Type: Closed Driver Unit: 30mm Dynamic Frequency Response: 10Hz-22,000Hz Sensitivity: Power ON 115 dB/mW, OFF 110 dB/mW Impedance (at 1 kHz): Power ON 220 O, OFF 45 O Cable: 1.2m Y-Type Plug: L-shaped Gold-plated Stereo Mini Approx. Weight(excl. cable): 150g incl. battery Headphone Power Indicator: LED (green) Batteries: Dry Battery(Size AAA) (batteries not included) Battery Life: Max. 80 hours (alkaline battery), 40 hours (manganese battery) Passive Operation: Yes Total Noise Suppression Ratio dB: Approx. 13dB Total Noise Suppression Ratio %: Approx. 95%