Reduces exterior noise by more than 70 percent (10 dB) so you can hear music against a quieter background
Tiny size allows easy storage in a backpack, briefcase, or purse
Extended battery life approximately 60 hours with a single AAA alkaline battery
Noise-canceling on/off switch; headphones work with or without power
Includes soft carrying case and airplane adapter plug
Sony MDR-NC11 Fontopia Noise Canceling Headphones with In-line Volume Control
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