I added this tuner to the store for one reason---I tried it and thought it was the best headstock tuner I've ever used. It is compact in size but extremely easy to see and read. The response on this tuner is amazing! The entire screen shifts from red to green when you are in tune. You also see the letter of the note and the degree to which you are sharp or flat. You can also adjust the exact pitch you are tuning to. Planet Waves hit a home run on this one!