AKG by Harman Y-20U Yellow In-Ear-Headphone - in-ear design, specially angled ear-tips, closed-back, universal 1 button remote/mic, 8 mm drivers, 16 ohms rated impedance, 115 dB efficiency, frequency response: 13 - 22500 Hz, 19 mW maximum input, 3,5 mm plug, incl. silicone eartips in three sizes (small, medium and large) and pouch, color: yellow