Musedo T-66 Strap Buckle Tuner T-66 is a portable strap buckle tuner. It is easy to use, with a strong practicability and pretty cool appearance. The design inspiration of the appearance originates from the Route 66. Scope of application: The strap button should be no more than 15mm in diameter Applicable guitars: Fender/Squier, Gibson/Epiphone, Musicman/Sterling, Jackson, Ibanez, ESP, Schecter,etc. Notice: Brands above are not belong to Musedo or Cherubtechnology Tuning range: A0(27.5Hz)~C8(4186Hz), A4 range: 440Hz