High visibility 4mm multi-coloured LED; Red, Orange, Green, Blue, Purple and White; LED colour changed by pushing rubber touch button ; On rear of alarm (as per RX+); Dual step sensitivity; Indexed volume adjustment dial; Indexed tone adjustment dial; Top quality cone speaker; Built in I-Com transmitter technology; For use with MX Receiver; Rubber ear inlays; Tru-run roller wheel; Three position toggle switch; D-Tech Sensing System; Silent start up; 1 x power out socket ; For use with illuminated bite indicators; Supplied with hard case; Powered by 2 x AAA batteries