This product is either discontinued or we cannot get that from suppliers.
Jabra Pro930 930-25-503-103, Operating Range Up to 120m, Headset Bandwidth Narrowband and Wideband, Connection Mini USB, Talk Time Up to 12 hours, Standby Time Up to 33 hours, Speaker Size 28 diameter x 5.9mm, Speaker Sensitivity 91 +/- 3dB (60mV at 1000Hz), Speaker Impedance 32 +/- 4.8 Ohms (at 1000Hz), Speaker Frequency 150Hz to 7 kHz (at output S.P.L. -10dB), Microphone Sensitivity-30 +/- 2dB (f=1kHz, Pin=1Pa, 0dB=1V/Pa).