Sennheiser HD 206, this comfortable, lightweight on-ear earphone delivers dynamic sound with crisp bass and excellent external noise attenuation at a very reasonable price. It is a perfect choice for music lovers. Features: Closed-back Design: Closed-back headphone with the driver placed in a separate cavity offers strong sound reproduction and full bass response. Noise Isolation: The over-ear design offers good environmental noise attenuation, it can keep you away from the noise and immerse in music world. Lightweight Design: Lightweight and portable, and its soft ear cushion and head beam make it comfortable to wear even for a long time use. Strong Compatibility: 1/8" plug (3.5mm) with 1/4" (6.3mm) adapter included, compatible with phones, tablets, computers, portable audio players and studio recorders. Great Sound Effect: Sennheiser HD 206 provides clear and bright treble, thick and solid middle tone, strong and powerful bass, with rich music level. Specifications: Brand: Sennheiser Model: HD 206 Sensitivity: 108dB Resistance: 24ohm Frequency Response Range: 21-18KHz THD: