Patented led lighting technology with bass boost & noise isolations, Lights flash to the sound output of any device with a 3, 5mm headphone jack, Volume level of music device controls the brightness of the flashing lights, Light can be turned on or off while user is listening to music, Type: Earphone, Connectivity Technology: Wired, Wireless Technology: Not Applicable, Cable Length: 44"", Sound Mode: Stereo, Earpiece Design: Earbud, Earpiece Type: Binaural, Host Interface: Mini-phone, Color: Black with Blue Led Lights, Form Factor: Open, Easy to follow quick reference guide, Comfortable and easy to use SKU: PEIBLBLB2