BOSTON Clip-on Chromatic Tuner for Guitar, Bass, Ukulele, Violin etc. This is one of the easiest tuners to use out there! There are no buttons, which means no fiddling about. Just clip the tuner onto the headstock of your chosen instrument, and it will automatically turn on. Tune up your instrument (which is easy-peasy, but we'll get to that later) then when you're done, remove the tuner from headstock and it will automatically power off! Place tuner on head-stock and begin tuning of strings. While plucking your instrument's string, the tuner will either light up GREEN when in tune, Red when note is sharp or Orange when note is flat. Adjust instrument's machine heads until desired tuning is achieved. And just for good measure, the Boston BTU-150 has a built in "auto off" function. This m.
