U777 Wireless Microphone System,Dual Wireless Mic Cordless

u777German submarine U777 was a German Type VIIC Uboat built in World War II, launched on 25 March 1944, and commissioned on 9 May, by its sole commander,German submarine U-777 was a German Type VIIC U-boat built in World War II, launched on 25 March 1944, and commissioned on 9 May, by its sole commander, Oberleu...