It's little, it's black, it goes on the end of your board... it'll fix the impedance loss you get from all those fancy true bypass pedals you bought. Stick it on the board and there.... that's better.

Model: JHS Little Black Buffer
Made: USA, recent model
Type: buffer
Power: standard 9v negative input
Switching: none
Equivalent new street price (approx): $75aud 
Mods: none
Accessories: no box or manual
Condition notes: used, no noticeable marks, very good condition