PS 320 s coaxial dual dynamic driver feature an optimized passive crossover network for wide frequency range with high definition sound; from sparkling high notes to deep bass response. Lightweight yet durable headphones are designed for comfortable wearability. Genuine leather ear cups and headband trim. Listen and enjoy your favorite jazz; rock; acoustic or classical music. Features include:- Studio Grade 40mm Electrodynamic Drivers; Sensitivity : 98dB; Impedance : 32 ohm; Max input power : 1000 mW; Weight : 6.5oz/185g; Accesories Includes : 6.3mm stereo gold plated plug; Compact carrying case; Owner s Guide; 1-year warranty.