sony MDRZX310-WQ Foldable Headphones - Metallic White You can enjoy high-quality sound and balanced to mid range from bass.I adopt the ear pads to fit the skin with soft texture. I realize the sound well-balanced and high wearability. Easy to carry because it is possible to compact size Reproduction frequency band: 10~24000Hz. Maximum input: 1000mW Impedance: 24. Output sound pressure level (sensitivity): 98dB Driver diameter: 30mm(CCAW voice coil adoption)