Originally modelled in 3ds max 2015. Final images rendered with VRay 3.0
One model includes materials for four watch Casio: GA-110-7AER, GA-110-1BER, GA-110SL-4AER, GA-110GB.
Materials based on blend material maps, so using any of the available material is easy to obtain a new material.
Stamping letters on the body and corrugation on the buttons are made using VRayDisplacementMod

files:
MAX2015- VRay 3.0 materials. There is a file library materials as the materials in the slots Material Editor.

Other formats exported from 3ds Max 2015:

MAX2012- VRay 2.3 materials. Materials in slots Material Editor.
FBX - no materials, no textures
OBJ - no materials, no textures

Models:
Materials: Multi/Sub-Object, Blend, VrayMtl, Shellac.
16 objects
dimensions: 50x73x80 mm
modify: VRayDisplacementMod, TurboSmooth

textures:
2 Displacement map for buttons and clasp (jpeg 2048x2048),
8 Blend material map (jpg 2048x2048),
1 Texture for back cover (jpg 2048x2048),
18 Blend material map (jpg 1024x1024),
1 Environment map (exr 4000x2000)