Quartz Tuner, Made In Korea, bought in 1993.
It has an input and an output jack 6.35, and a micro view intgre nitre needle.
A slecteur 8 positions: Off, Test battery and one position for each of the 6-string ...
It works with a 9V battery
This is my first tuner and I've never found a reliability issue, the needle
tendency to hang and is very easy trs sensible inclination given to it ...
I bought 150Fr the era, I find that expensive considering its reliability c'tait.
Looking back I do not regret to have replaced by a KORG GA-30 (% https://fr.audiofanzine.com/produits/index 2Cidproduit 2C17147.html%) ...