... headphone, different colors, clear voice, comfortable wearing headphone, multiple use High quality, Hi-tech, modern headphone, multiple use for MP3, MP4, desktop ... 2. Different colors available 3. We offer to print customer's LOGO and pack as per requirement.4. USB and 3 ... ΩDriver Diameter Ø40.00mmImpedance 32Ω±3%Frequency Response 20~20kHzSensitivity(S.P.L) 105±3dBCord Length Appr.2.0meters