I also liked, that with either tuner, the cute round "eye" display swivels freely 360 degrees to aim back at you, down the neck or whatever direction you require. It runs on an included watch battery and has a large silver button to toggle it on/off easily. There are two tuning modes: vibration where the tuner is sensitive to your guitars vibration--even decent electric guitars trigger it well and the microphone mode for acoustical tuning.

Features continue with a tap tempo button that flashes the tempo as a pink heart and as a digital readout in BPM. This is a good one for solo casual gigs to put yourself on tempo There is also a transposition mode for alternate tunings and a calibration adjustment if you work in Europe where A may not be 440Hz.