1.77 ""color large screen, full keyboard, fully open menu operation, local channel storage and deletion, simple and easy to operate, free from the constraints of programming software. Full keyboard manual frequency transmission, 999 channels storage. One-click frequency matching and easy pairing group (copy channel configuration parameters) Relay function settings: frequency difference frequency, frequency difference direction, frequency reversal and relay activation audio settings (1750HZ, 1450HZ, 2100HZ and 1000HZ). Featured LED flashlight and acousto-optic alarm function (three alarm types are set) to protect your safety. DTMF coding and decoding function, 15 DTMF calls. Frequency hopping and scrambling functions, keeping your call private Chinese and English language selection, menu and channel voice prompts. Dual-guard, Dual-standby, Dual-segment Single-guard and Single-segment Single-guard Mode with adjustable high and low power. Support NOAA weather reception function in the United States and Canada FM radio function (receiving frequency 65~108MHZ) Automatic or manual keyboard lock, LCD backlight and key backlight function Stopwatch function Power on password management function