Overdrive, light to medium gain, but in true Bjorn fashion: very nice. This sits somewhere between Tubescreamer and Klon styles of drive, with a handy 'treble' control that allows you to add articulation and clarity. It's handy as an always-on pedal to enhance the touch sensitivity of your amp or liven up something that's otherwise a bit flat. 

Model: One Control Strawberry Red Overdrive 
Made: Japan, recent model
Serial: obscured
Type: overdrive
Power Input: standard 9v DC centre-negative or 9v battery (not included)
Accessories: original box and manual

Condition notes: used, no major marks. Tested and fully functional.
Overall: excellent condition (9/10)