Yamaha Chromatic Tuner and Metronome Tdm-37l [Target] Horn instruments, tuba, euphonium, oboe, bassoon, E  clarinet, B  clarinet, bass clarinet, saxophone, trumpet / cornet (C tone, F tone, B  tone, E  tone) transposition featured Multi-angle structure that can be adjusted to comfortable viewing angle of the player A pure major third, marked indicating the pitch of the minor third Memory backup featured / auto power off function equipped