Features: Adopts 50mm driver, with high sensitivity, wide response range and large dynamic. Clear sound, strong penetration, low stress and strong, suitable for listening to music type audio. Lightweight structure and self-adjusting headband for secure and comfortable wearing. 6.5mm plug is suitable for different devices with 6.5mm interface, such as guitar amplifier, electric piano, audio mixer, etc. This product is a headphone especially designed for electronic musical instruments, not for PC. Note: The headphone is not suitable for PC. Specifications: Color: Black Material: ABS Headphone jack: 6.5mm jack Speaker: 50mm Impedance: 32 Ohms Sensitivity: 60dB 3dB Frequency Response: 20Hz-20KHz Rating Power: 20mW Cordlenght:2.2M Item weight: 201g / 7.09oz Package size: 20 * 19 * 8cm / 7.87 * 7.48 * 3.14in Package weight: 281g / 9.91oz Package List: 1 * Headphone