Product information : How to wear: Head-mounted Plug diameter: 3.5mm Plug type: plug-in type Whether wireless headset: wired headset Frequency response range: 20-20000(Hz) Impedance: 32() Distortion rate: 0.1 (%) Earplugs/earmuffs material: tanned leather Headphone cable material: braided cable Color: SY-G20 black-orange light-emitting earphone with packaging (with one point and two lines), SY-G20 black-light-emitting earphone with packaging (with one point and two lines), SY-G20 black-green light-emitting earphone with packaging (with one point and two lines), SY-G20 black-orange non-light-emitting earphone with packaging (with one point and two lines), SY Size Information: Size: 20x10x21.2cm Packing list: Headphones *1