CG SOLID BASS Deep Audio Champagne Gold Audio-Technica ATH-CKS550X In-Ear Headphones, Wired, Bass, Hi-Res Compatible,

A φ9.8mm SOLID BASS HD driver with excellent transient response reproduces crisp, deep bass. Large-diameter sound conduits improve sound transmission efficiency and support high-resolution audio sources. Achieves both high airtightness and comfortable fit in a compact body. Closed-back design minimizes sound leakage. A pouch for storing the earphones and four sizes of ear tips are included.