Noise-cancelling headphones. 
 Wired Solitude XCS2 Active Noise Cancelling Headphones 

 - 1 set of headphones ;  61 x 39 x 39 cm +  1 carrying case, 1 3.5mm microphone cable, 1 adapter (1/8” to 1/4”), and 1 dual-pin airline adapter 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Library of things, technology.<br/>Headphones.