The Sennheiser HP 02 is a robust, lightweight on-ear set of headphones with excellent speech intelligibility, specially created by Sennheiser for conference and visitor guidance systems. FEATURES •  Adjustable, lightweight headband for listening comfort • Excellent speech intelligibility • On-ear headphones with very good acoustic quality • Rotatable ear cups for efficient storage • Easily changeable ear pads for comfort and hygiene • Impedance 32 ohms ONE YEAR WARRANTY