The ATH-CKX5BK SonicFuel in-ear Headphones from Audio-Technica provide crisp, accurate audio reproduction. These headphones feature 8mm enhanced drivers, a C-tip design for stay-in-place comfort and a 360 Degree rotating eartip that adjusts to the unique angle of your ear canal. Freq resp: 15Hz-22,000Hz. Includes carrying pouch, eartips (XS/S/M/L) and C-tips (S/M/L). Black.