Sony Heavy Bass with Remote Control and Red MDR-XB550AP Headphones, Model Foldable, Microphone, (MDR-XB550AP R)

Features a bass booster for overwhelmingly powerful, deep bass. EXTRA BASS features a dedicated 30mm driver for powerful, deep bass reproduction. Hands-free calling and music control via remote are possible with your smartphone. Ear pads that offer both a comfortable fit and airtightness. The Xperia™ exclusive "SmartKey app" allows you to customize remote control settings to your liking.