Premier guitar magazine happy musicians agree that the uber tuner is the best tuner they ve ever used. Here s why experience worry-free tuning with 1 cent accuracy lightening fast- wide tuning range of A0-C8- variable A4 frequency of 430-450 hz (pitch calibration)- specific tuning modes for guitar bass violin ukulele and chromatic- super bright full-color display lets you easily see whether you re in tune or not- easy to use for beginners robust enough for pros- tuner can attach in front or behind the headstock- works with a capo as well as with any tuning.