Type: Headphone; Speaker Diameter:40mm; Sensitivity: 108dB (tolerance:3dB); Frequency Response: 15Hz-20,000Hz; Impedance: 32ohm ; Rated Power: 20mW; Power Capability: 200mW; Cable Length: 2.2M add 0.15M; Plug Type: Stereo diameter:3.5mm Notes: 1) A 40mm speaker combined with high flux magnet and ultra-thin diaphragm delivers quick and du\ynamic low frequencies and crystal clear high frequencies for greater impact. High quality noise-proff mic actively attenuate ambient noise for precise high and clear communication; 2) The headphone utilizes high grade3 coiled Oxygen-free for speedy transfer with minimal loss. And with the built-in tensile tinsel, it achieves exceptional quality and prolonged usage; 3) Better oxidation resistance greatly extends 3.5mm goldplated plug's performance life; 4) The headphone complies with the EU RoHS Directive which certifies it environment friendly and ensures a safe and secure use.