AROMA AT-09 TUNER, a wide and bright screen, pedal-type for easy use. Calibration function included. Powered by either a 9V battery or an AC adapter (battery not included). - Model Name: AT-09 TUNER - Display Color: Green - Display Color: Blue - Brand Name: AROMA - Type: Pedal Type Thank you for viewing. This is a pedal-type tuner. It has simple functions and high accuracy, and its small size doesn't take up much space on a pedalboard. It has good visibility even on a dark stage, and it also has a mute function, making it very easy to use. I am selling it to organize my equipment. Please understand that this is a used item. I am not offering exclusive sales or price negotiations. No returns or refunds, please.