Product information: Material: ABS Earplugs/earmuffs material: artificial skin protein Type: Headphone Headphone type: headphone Wearing method: head-mounted Headphone output audio source: communication equipment Plug diameter: 3.5mm Is there a microphone: yes Sounding principle: moving coil Frequency response range: 20-20000 (Hz) Impedance: 32 () Sensitivity: 95 (dB) Wire length: 1.6 (m) Speaker diameter: 50 (mm) Color: pure black Packing list: Headphone*1 Color box packaging*1 Manual *1