This is a new tuner that was a gift, I have a lot of tuners. I took some pictures showing strings that are sharp or flat or tuned. The display is large and easy to read. This does not have a battery compartment, external power is needed. I have the instructions but you don't need them, just plug in and turn it on. This also has an out jack if you put it into a pedal train. TEXT to 801 520 6954 or Call DOC 801 520 5956