Realistic PRO-2021. Get superior performance with the very lastest in solid state technology. Features direct keyboard entry, search and scan in two speeds, two second scan delay so you won’t miss return calls, priority circuit and individual lockouts for temporarily bypassing channels. Easy to read LCD channel / frequency display, squelch control and built-in speaker. Jacks for external speaker, external antenna and tape recorder. Includes mounting bracket for mobile use. UL listed AC or DC adapter. Memory backup requires 9V battery.