NUX Flow Tune has a compact design with a large, high-definition LCD display. Easily see your tunings in both light and dark environments with its small size making it perfect for pedalboards. Tuning Range: A0 (27.5Hz) - C8 (4186Hz) Tuning Modes: Chromatic, Guitar, Bass Display Modes: Strobo Mode, Arrow Mode 1, Arrow Mode 2 Bypass Modes: True Bypass, Buffered Bypass, Buffered Bypass Monitor Power: 9V DC Adaptor (Not Included) Dimensions: 97.4 x 43.5 x 41.6mm