New, unused, and free shipping (simple packaging, mail service) Price not negotiable. Color: Silver Type: With microphone Impedance: 25 ohms Sensitivity: 109dB/mW Frequency Response: 20-40000Hz Plug: 3.5mm stereo plug Cable Length: 1.2 meters 【10mm Composite Magnetic Dynamic Driver】 We received feedback from audiophiles who wanted to experience the appeal of deep bass. As is well known, dynamic drivers have better resolution in the low-frequency range. We decided to develop pure dynamic earphones. Equipped with a 10mm composite dynamic driver, these earphones have excellent resolution for bass and deep bass sounds. Audiophiles can use these earphones to enjoy the appeal of deep bass sounds. 【Professional Tuning Technology】 Although equipped with high-quality dynamic drivers, we felt that this alone was not enough. Our engineers put their hearts into tuning these earphones. Finally, we achieved the ideal effect. They are highly compatible with ACG music. They also have excellent resolution for electronic music and heavy metal music. Audiophiles can use these KZ ZVX earphones to enjoy ACG music. 【Easy to Drive, Low Impedance】 With a low impedance of 35 ohms, audiophiles can drive these earphones with their smartphones. Also, the KZ ZVX is easy to plug in, so audiophiles won't have trouble plugging them in. 95dB can reproduce the vocals and bass well. Audiophiles can enjoy the KZ ZVX earphones without using any amplifier. 【Detachable Cable Design】 The 2-pin connector design allows for upgrades. Audiophiles can use their favorite cables. 【Ergonomically Designed】 Designed based on ergonomics. They fit the human ear very well. The shell and faceplate are made of natural resin that is harmless to human skin. In addition, they also have a noise-canceling function, which can cancel 15%-30% of noise.