Sony MDR-XB50APB New In-Ear Headset eXtra Bass closed type. Improved design with a more comfortable fit. 12mm, 4-24000Hz, 106dB/mW, 100mW.

Design: Intracanal
Description: Design: in-ear, device type: wired headphones, acoustic design type: closed
Device type: Wired headphones
Mount type: Without attachment
Type of acoustic design: Closed