HP USB Speaker Phone
Speaker driver :
Driver: 40 mm diameter. Sensitivity: 80 dB +/- 2 dB @ 1KHz. Frequency Response: 160 ~ 18K Hz Distortion: max <=3% Impedance: 4Ω +/- 10% @ 1KHz
Microphone Unit:
4 mm diameter Type: Omni directional Sensitivity: -36 dBV/Pa Frequency Response: 70 ~ 10KHz SNR: >= 58 db Max input SPL: 110dB Impedance:2.2 K Ohm
Connector: Micro USB
Color: Jack Black
Dimensions (Diameter x Height): 3.18 x 1.61 in (80.8 x 29.7 mm)
Weight: 2.82 oz. (80 g)