Descriptions:
-Mono headphone with retractable head band.
-Microphone head phone for call centers.
-Headset with flexible microphone, band to directions as needed.
-Mono headset also available for computers.
-Call center headset with soft sponge ear cushion.
-Headphone with RoHs/CE available as demand.
-Mono headset with buyer's specifications accepted.
-Package: PE bag / blister case / color box, or any others as needed.

 Headphone specifications:
-Driver unit: Dia 30mm
-Impedance: 32ohms
-Sensitivity: 109dB+/-3dB
-Max input power: 50mW
-Frequency Response: 20Hz-20,000Hz
-Cord length:1.8m+/-3%
-Plug type: 3.5mm stereo / RJJ plug

Microphone specifications:
-Dimensions: 6×5mm
-Sensitivity: 60dB+/-3dB
-Frequency Response: 20Hz-20,000Hz