vibration headphone (TEN-880)

SPECIFICATIONS :
Driver: 40mm
Impedance: 32ohm(1kHz)
Sensitivity: 102dB/mW
Frequency response: 50~20,000Hz
Magnet: Neodymium
Cord Length: Approx 2.5~4M
Plug: 3.5mm Gold Plated
Mic Dimensions:9.7X6.7mm
Sensitivity:-40dB?dB
Directivity:Omnidirectional
lmpedance :Driver Diameter:40.0mm
lmpedance :32ohm
Frequency Response :20~20kHz
Sensitivity(S.P.L) :105.0dB?dB(at 1KHz)
Input Plug Diameter:3.5mm
Cord Length:2.5meters
Net Weight:Appr.295g
Packing list :
DESCRIPTION :
stereo headphone with Mic
UNIT PACKAGE :  blister card
PCS /CTN   :  48
CTN SIZE(CM) :  82*56*60
G.W.(KGS)   :  26