Headset w/mic & volume control  
Frequency Range:20H--20KHZ
Maximum Power input:60mw
Rated Power:20MW
Speaker:40mm
Impedance:32ohm
Microphone Uint:6x 5-58db±3db
Plugging:3.5mm Stereo
Length of cable:2.0m

Packing: Blister
Qtty: 60PCS/CTN 
Carton Size: 64.5*48.5*60cm 
N.W.: 14.7 KGS
G.W.: 15.7 KGS