This little pedal works great. Typical cosmetic flaws from a pedal that’s been used live often. Here’s the official write up:

14The TC Electronic PolyTune 2 Noir is an ultra-compact polyphonic and chromatic tuner pedal. It allows you to tune all strings simultaneously by strumming, or individually with ±0.1 cent accuracy. Featuring a bright, sunlight-readable display, it includes a strobe mode for setting intonation and mutes your signal automatically while active. Key Features:

• Polyphonic Tuning: Instantly gauge the tuning of all 6 strings at once by strumming open strings. 
• Strobe & Chromatic Modes: Switch between standard chromatic tuning and an ultra-precise strobe mode (±0.1 cent) ideal for intonation adjustments.
• Bright LED Display: Packed with over 100 bright LEDs and an ambient light sensor, it automatically adjusts for high visibility on both dark stages and in direct sunlight. 
• Pedalboard Friendly: The sleek, minimalist black chassis saves precious real estate on your pedalboard. 
• True Bypass/Buffer: Includes a built-in BONAFIDE Buffer circuit that can be toggled depending on whether you need to drive long cable runs or keep your signal completely uncolored.