USB Port Language Laboratory Headphone
Language Lab Headphone Features:
1)Headphones:
a) Frequency Response: 125Hz ~ 8000 Hz, ± 17 dB (0dB = 20uPa The) (input power = 1mW);
b) Electrical Impedance: 32Ù ± 20%;
c) The characteristics of sound pressure level (sensitivity): the = 100dB/1mW (0dB = 20uPa).
2)Microphone:
a) Frequency response :40-20000HZ
b) Type: electrets microphone;
c) Receiving voltage response: -47 ± 2 dB (0 dB = 1V/Pa);
d) Directional type: two-way.
Language Laboratory Headphone Detail

Language Laboratory Headphone Packing
1). Packing Measurement
MODEL ITEM QTY(PCS) G.W.(KGS) N.W.(KGS) MEA(CM)
GD609 USB Headphone 40 9.00 7.80 56*48*35
2). Packing Details

Payment & Delivery
1)Payment Terms: TT, L/C at sight.
2)Delivery Time: 10-15 days after getting the deposit
Real Language Lab Headphone Case
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website:http://www.greelanlabs.com/language-lab-headset/