JVC HA-NC250 3.5mm/ 6.3mm Connector Circumaural Noise Canceling Headphone

85% noise reduction (more than 18dB at 150Hz)

Excellent sound isolation thanks to sound-insulating ear pads and dual housing structure

High quality sound reproduction with 40mm Neodymium driver unit

Works as normal headphones when turned off

Power Supply: AAA battery x 1 (included)

Battery Life: approximate 50 hours