Thank you for your interest in the package, please see the below:

Format:
Blender / Cycles

Scale:
1:1 (Real world scale)

Materials:
Principled Shaders

Scene:
Blender using included HDRI for lighting, cameras using focal depth which can be switched off.

Objects:
Smooth modifiers left on, stack intact (in other words the model could be used for low poly environments if you switch of the smoother on the bow.

Layers:
Hero objects - layer 1
Background objects - Layer 2
Cameras and plane with shadow catcher enabled - Layer 10