Snark HZ-1 Hertz Tuning Clip-On Tuner

These are basically good tuners, and the Hertz display is great but there are several things that you should be aware of as I discovered. First, if you play a classical guitar this model with the flat clip does not open wide enough for the guitar headstock. Also, this it has small smooth flat areas to grip and seems cheaply made and can slip out of your hand ( it actually shot out of my hand once). The display is smaller than most others. The Hertz function is nice but you have to tune the strings in the order they specify or it doesn't work. I would recommend the ST-8HZ model instead as it has wider clamp opening, bigger display and better finger grips .