The Newest! Tunes Tighter So You Sound Better. The SN-8 Snark Super Tight Chromatic Instrument Tuner provides a solid stay-put clip-on direct connection to your instrument. Has more precise tuning, and advanced features! Power saving feature: tuner display will dim after 5 seconds of no sound detected. This conserve battery power. Display returns to normal brightness when a note is detected. If no notes are detected for 2 minutes, tuner will shut off. Improved Full Color visual display with larger improved frequency lines making it an easy read. It can be used in practice or live giging situations. Other features: tap tempo metronome, pitch calibration, and a transpose feature for tuning guitars with capo. Internal vibration sensor detects notes by clipping on directly to instrument. The Snark only weighs 1.5 ounces with a very expertly made clamp with rubber gripping jaws. The lower jaw hinges allowing it to fit any contour. Snark tuners will clip on and stay to even Ovation with the angled head stock. Also has ball socket on each end of the curved mounting post that connects the clamp to the face. Allows 360 degress maneuvering making the Snark perfectly adjustable for most any situation. Comes complete with a CR2032 Lithium 3 volt battery. This is the same kind that many computers use for the clock battery. Battery is held in a simple pull out draw behind tuner face. Its best to tune-up on stage just before you play because the temperature on stage will be a little different than other places in the building. A clip on tuner is fast and you can put the Snark in your pocket as soon as youre done or leave it on instrument. People will even ask you where they can get one because they are so impressive being so small, convenient, and quick to use. Tuning is easy. To go from one note to the next is very fast, almost instant so it takes less time to tune up. Snark has the transpose feature for perfect tuning with capo in place.