Ultimate Ears UE 150; in-ear headphones with ergonomic fit; with dynamic 1-way driver; neutral sound tuning; suitable for all application areas; frequency response: 5 Hz - 22 kHz; impedance: 15.4 Ohm; efficiency: 103.5 dB / 0.1V RMS; noise isolation: up to -26 dB; exchangeable cable (length: 127 cm) 3.5mm mini jack to IPX (Estron T2, IP67); colour (earpiece): Transparent with black faceplate, (cable) black; Scope of delivery: silicone ear tips (XS, S, M, L), foam ear tips (S, M, L), cleaning tool, carrying case