A compact tuner adjustable in the range of 410-480Hz. It also features a visual metronome function. This is the older type, with green, red, and yellow LEDs, before the white LED models that are currently sold. I have equipped all my guitars with this tuner, and this one was kept unused as a spare. I am selling it because I am reducing the number of guitars I own. I am selling two of these under the same conditions. If you purchase both at the same time, I will consider a discount on the shipping cost plus a little extra. Please feel free to ask. - Brand: D'Addario - Model Name: NS Micro Tuner - Supported Instruments: Guitar, Bass, Mandolin, Ukulele, Banjo - Features: Visual metronome, reversible multi-color display - Tuning Range: 410-480Hz - Mounting: Can be mounted on the front or back of the headstock - Clamp Function: Ratchet clamp for easy adjustment Thank you for looking.