Large easy-to-push PTT switch. 50 CTCSS tone encoder/decoder with pocket beep and tone scan functions. Optional HM-75A, microphone for simple remote control. Thumb-touch lock switch. Channel indication. 9 DTMF memories with up to 16 digits each. Auto power saver with selectable duty. Multiple scans provide versatile signal detection. Auto power off. Auto repeater function. LCD backlight with timer.