This is a ridiculously small Bazz Fuss fuzz pedal in a 1590H enclosure (2" x 1.5" x 1"). A regular sized, white 125B is shown for reference.
It has tone, gain, and volume controls, as well as an indicator LED. True bypass.
Knob indicators don't correspond to their actual position (a limitation of the super-small enclosure). Robot teeth are drawn on with a sharpie and can be removed in 2 seconds with some nail polish remover.