Sony ECM-77 self-powering clip-on Lapel Microphone

Miniature, 5.6mm diameter, 12.5mm length, weight 1.5g. Extended frequency response (40-20000Hz) is enabled by new developments in mechanical and electronic construction. Intended for TV and stage applications, where the highest quality inconspicuous microphone is required. Even when hidden inside costumes, the carefully-tailored frequency response ensures detailed voice pick-up. Omnidirectional polar pattern. Supplied connected to a pre-amplifier housed in a separate barrel, with balanced XLR output. Powered by internal battery.