The User Interface is needlessly difficult to see - even indoors. For some reason D'Addario decided to waste most of the tiny screen area by using THIN, NARROW green bars to indicate you are in tune. The bars are so short they are only about half the height of the screen. They are so narrow that they are hard to even see next to the next problem. The Chord names are in the like giant robotic font - some of the strings names (E) are easy to see - others like the G look like a C when you are looking down through your strings into the soundhole. So I give this product an F for failing to do the second most important thing (after accurate tuning) is make the thing easy to read. Let's add - there is no indicator when you are in tune - nothing blinks to confirm - so it is so hard to see when it is close to tune - and no indicator - you just get in tune and then keep going out of tune! I gigged outdoors with this and it is useless unless it is dark or night. Big fail on this product.

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