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Thanks for purchasing the Fender Flash Tuner – an eco-friendly and convenient clip-on tuner that will keep your instrument in tune in a noisy environment and help save the planet at the same time. Product Open/Flat Power/Mode Tuning Button Button...
2. b/Open button Features When the tuner is in Guitar or Bass tuning modes, short press this Chromatic Tuner with Guitar, Bass, Ukulele and Violin modes. button to switch between the open and flat tuning modes: open G, Built-in rechargeable battery allows over 10 hours continuous open D, open E, or half step flat (b) and whole step flat (bb).
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