Signaling-Quick Call II, DTMF, part of the MDC1200 Option board - No Keyboard - No Screen - No Emergency call feature -- U.S. military standards - the U.S. military standard 810 C, D and E Weight (g / kg)-1.01kg Power Output-1-25W Frequency -136-162 MHz ,146-174MHz ,438- 470MHz Channel capacity -8 Dimensions (X-X-thick)- 44mm x 169mm x 118mm