Boss TU-12 Chromatic Tuner (Second-Hand)

A blast from the past!

Anyone who was born prior the year 2000 and plays guitar has probably encountered one of these. One of the original portable tuner devices, these feature a VU meter, adjustable standard pitch from 440 to 445hz, as well as a built-in condenser microphone for acoustic instruments. Super straight ahead to use. 

Hardware and electronics are most functional, with both inputs and outputs working. However, the microphone appears to be non-functional. Includes the protective outer case.