The OLB works with all IndieAssist type units.

There is a firmware update of the indieASSIST unit itself required to control the box.

The overlay box has these features:

Exposed film counter onscreen
Shutter angle onscreen

Advanced framelines

Anamorphic image desqueeze 2x / 1.8x / 1.5x / 1.3x
REC/RUN indicator

CAM identifier

Convert framerates to 24p output
Fps notification onscreen