GS-A838MV
1.Thrilling bass system, 40mm professional heavy bass coil-moving loudhailer, 16μ super-thin diaphragm and the magnet adopts high-magnetization Nd-Fe-B magnet 400 KJ/m3, 50 to 20,000Hz frequency response range makes the sound most beautifully described.
2.High sensitivity microphone, it is good for talking by Skype and MSN. You can get true digital quality and a noise canceling technology to filter out unwanted background noise and deliver better voice recognition, better voice command, better voice recording;
3.Distinctive counterflow system makes sound quality not influenced by speaker airflow;
4.Non-toxic tensile OFC high-purity oxygen-free copper wire with 2.2 metre long;
6.Multifunction headphone design with low impedance of 32 Ohm, it fits for different kinds of multimedia device, such as Mp3, Mp4, PSP, CD, Mobile Phone and PC, etc.;
7.Stylish gift box packing leads a gift idea.

Trumpet Diameter：40 mm 
Impedance：32 Ohm 
Sensitivity：119±3 dB/mW 
Frequency Response：50 - 20000 Hz 
Rated Power：10 mw 
Largest Power：20 mw 
Microphone Type：6×5mm 
Microphone Sensitivity：-58±3 dB/mW 
Plug Type：3.5 mm Stereo 
Cord Length：220 cm