Alteam Noise Canceling Headphones.Reduce ambient noise by 60-70% Ergonomically designed for maximum comfortable listening experience.Up to 20dB of noise cancellation.Large 40mm driver with clear sound and well defined bass. Volume control on the headset to help amplify music from your mp3 player or other listening device Listen to music even if noise canceling is turned off. Includes dual-prong in-flight adapter plug and ¼-inch stereo plug adapter.