The new Sona ion is one clever tuner! Easily clips on to any instrument- on each side of the nut for violins and violas, onto the head stick for guitars, and onto the bridge for cellos and basses.
Operating the ion couldn't be easier; siply clip it on, adjust the LCD screen so you can see it, press the button, and start tuning. The colorful LCD screen changes from yellow (flat) or red (sharp) to green the instant your note is perfectly in tune. You can calibrate the device to your desired pitch.