CX-500HQ/PS-510M Condenser...
 Made in Shanghai
 Type: Omni-directional Condenser
 Frequency Response of CX-500HQ: 20 to 20,000 Hz
 Sensitivity (at 1,000Hz): -58±3dB*(1.25mV)*0dB=1V/μbar
 Frequency Response of PS-510M: 20 to 20,000 Hz
 Power Supply: Batt. Power 9V/12 to 48V Phanton Power