retractable earphone with mic

Drive unit: 40mm

speaker impedance:32 ohm ±15%

speaker sensitivity:107db ±3db

speaker frequency response:20-20, 000Hz

maximum power input:50mw

microphone impedance:2.2K

microphone operating voltage:4.5V

microphone sensitivity:-54db±3db

microphone frequency response:100-16,000Hz

work with all multimedia

ideal for internet phone

hands-free communication

frequency range :100-20KHz(earphone),20-16KHz(microphone)

type:moving coil type

resistance:32ohm±10%

jack:diameter:3.5mm*2

cable length :2.5M

Plug:¢3.5mm

simply beautiful earphone