The metal earphone housing also helps to lower distortion when it comes to bass. This keeps headphones sound stable, for clear mid tones and high notes no matter what you are listening to. The headphones eliminate outside noise to keep your music crystal clear; They allow you to listen to your tracks at much lower and safer volumes; Also include various ear bud tip sets for right fit and ambient noise attenuation B25 in ear earphones delivers a tight, deep bass response, for low end focused music; An acoustic port controls air flow for the low frequency range, optimising diaphragm movement for an accurate reproduction of bass Lightweight Design: With its attractive appearance, the B25 in ear wired headphones are no less than charming; They are lightweight and provide long lasting comfort during a variety of activities; Strut in style and let the music flow anywhere you go Multi Functional: These wired earphones with microphone allow you to take calls hands free; The built-in mic makes answering and terminating calls simple and easy, meaning listening to music isn t the only function you can achieve with this earbuds