The benchmark tuner in pedal form, really. Does the job well.

Model: Boss TU-3 Chromatic Tuner 
Made: Taiwan, Dec 2012
Serial: Z5C6097
Type: chromatic tuner
Power Input: standard 9v DC centre-negative (supply not included)
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)