Make: Boss
Model: OD-20 Drive Zone Overdrive / Distortion
Box: None
Power Supply: Not included
Condition: Good - I think maybe it got splashed with acetone because the spots on that metal plate are not coming up. Also the plate has turned brown instead of black. It's pretty cool!

 
From the manufacturer:

The OD-20 Drive Zone uses advanced COSM technology to model the sound of classic overdrive/distortion pedals, as well as creating new sounds of its own. There are 22 models to choose from, plus new "Attack Shape" and "Heavy Octave" parameters for dialing in subtle nuances or extreme tones. You can even switch amp channels remotely using the OD-20's Amp Control jack.

This product is now discontinued.

• COSM Overdrive/Distortion Modeling pedal with 22 killer stompbox models including 6 all-new tones
• Models classic and modern overdrive/distortion pedals like BOSS OD-1 and MT-2, plus many other vintage and boutique pedals
• Attack Shape control adjusts overdrive's response dynamics to your playing
• Heavy Octave parameter creates sounds one octave below notes played on the 4th string, 4th fret and lower-great for heavy, single string riffs!
• 4 User memories for storing custom settings; also has Manual mode for realtime changes
• Line output with Amp Simulator; also works as headphone output
• Amp Control jack for switching amp channels from the OD-20

Got questions? Shoot me a message, I love nerding out with other gearheads!