Operation confirmed. These were attached to guitars I've gotten rid of, and I've tried various others, so I'm selling these as I no longer need them. Batteries are not included. These are used items. The Fender one has some rust on the back metal fitting. No claims, no returns, and no price reductions, please. boss x1 Boss fender x1 Fender greco x2 Greco vertech x1 Vertech #Guitar Tuner #Guitar Accessories #Clip Tuner #Tuning