In as-new condition, only used at home.

The pitchblack Portable is a guitar/bass polyphonic tuner that provides speedy and accurate tuning. The pitchblack Portable features a high-brightness LED display which provides excellent visibility, so that the pitch drift of each string is instantly and clearly visible. Korg's proprietary cable checker function is also built-in, letting you easily check for broken cables; making this unit the ideal choice for stage or studio use. The pitchblack portable lineup gives you a choice of three models: aluminum black, aluminum red, and aluminum silver. With an accuracy of +/-0.1 cents, the pitchblack Portable delivers a significant advance in guitar/bass tuning.

Key Features :

• Large, high-brightness LED display providing excellent visibility
• Rapid and precise polyphonic tuning, with the tuning of all strings visible at a glance
• String Seeker function
• Three meter display modes: regular, strobe, and half-strobe
• Ultra-high precision tuning of +/-0.1 cents (when using strobe meter)
• Ideal for “floating tremolo systems”
• Korg's proprietary automatic guitar/bass (4-6 string) detection
• Flat (5 Semitones), Capo (7 Semitones), and Drop-D tunings are also supported
• Cable Checker warns of broken or shorted cables
• Buffered output minimizes any change in audio quality
• Mute function lets you tune silently
• Cascade-connectable DC out
• Slim horizontal body fits anywhere

Link to specs: https://www.korg.com/nz/products/tuners/pitchblack_portable/page_2.php