The model is assigned a Multi / Sub-Object material with two IDs, changing the ID You will get the second material. On the models is the TurboSmooth modifier with the Render Iters function: from 1 to 2 values, if necessary, you can add the required number of segmentation by changing this indicator to a large number.
OBJ (OBJ, filesize: 3.96 MB), FBX (Autodesk FBX, filesize: 5.82 MB), 3DS (3D Studio, filesize: 3.3 MB), MAX (Autodesk 3ds Max, filesize: 3.3 MB)