Nice and simple, it's sometimes what's required to get the job done. Solid metal chassis, flexible EQ and a nice feel to the foot switch. Marshall in a box type OD that does the basics well. ROCK  

Model: Danelectro Daddy O. 
Made: China
Type: overdrive
Power: standard 9v supply/9v batt
Switching: true bypass
Draw: 6mA approx
Equivalent new street price (approx): $50-75
Mods: none
Accessories: original box, instruction manual
Condition notes: used, very good condition

Controls
Volume: volume control
EQ: bass, middle & treble 
Gain: output gain