JBL audio expertise, matched with the ROXY love of design, has resulted in these headphones. This cool little ear bud system is sized to fit comfortably in the female ear. You pick the music and the Reference 230 will bring you continuous, amazing sound. Keep your ear buds ready for the next use by stashing them in the included pouch.These ear buds let you listen in style, wherever adventure takes you. Sensitivity: 104dB; SPL @ 1KHz 1mW; Power: 50mw; Input: 16 ohms; Plug: Gold plated 3.5mm plug with mini jacks; Cord Length: 1m; I-Pod, MP3, and other various audio devices compatible.