Cry Baby, but... with more stuff. First, it has a little volume knob, and a 'Q' control which moves the sweep off the effect. It also has a little switchable boost and... it's spring loaded for activation, so step on it and it's going. Dang, Jim really solved all the issues here. 

Model: Dunlop Cry Baby 95Q
Made: USA, recent model (serial AB19P12)
Type: wah
Power: standard 9v supply or battery, draw 2mA approx
Switching: buffered bypass
Equivalent new street price (approx): $299aud
Mods: none
Accessories: no box or manual
Condition notes: used, few minor marks, fully functional. Overall: very good condition