The Yamaha RGX 312 is a super-strat like guitar made in the late 80's / beginning of the 90's. Earlier versions had a Yamaha RM II tremolo, chrome hardware and a jack-input on top of the body. Later versions had the Yamaha RMX-II tremolo, black hardware and the jack-input on the side of the body. The body was made of basswood or alder. There is also a left handed version Yamaha RGX 312. Other features are: