The Relm RPU-499APLUS, UHF 4W 450-470 MHz, are powerful micro-sized personal communicators! They have a 99 channel capability with priority scan, CTCSS, DCS,  DTMF, built in paging (decode AND encode), a alphanumeric display included, programmable hot keys, and are user programmable using a free guide for experienced users or optionally a $25 factory programming manual or a $49 PC programming kit with software and cable for a WINDOWS operating system.