Full-color vertical display / Power Requirements: 9V Battery or 9VDC (300mA) Power Supply. Reference Pitch: A4 = 440 Hz / Calibration Range: 415 - 475 Hz. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Tuners". The seller is "musicstoreinc" and is located in this country: US. This item can be shipped to United States.