FunctionsSolo HD High-performance with advanced driver design that allows you to enjoy every studio nuance of your favorite music. Deeper bass, bolder midrange, and cleaner, undistorted highs, long-wearing, comfortable that keeps the sound in and noise out.Connectivity Technology: Wired, Advanced driver design for precise audio clarity, Beat Studio sound, in a smaller, lighter on-ear design, Compact and incredibly lightweight, the tri-fold design allows Solos to fit into the included compact carrying case, Cleaning cloth with antimicrobial treatment polishes and controls germs.