It can be any of these:

  • Apple Watch Series 3 (GPS + Cellular) Aluminum 42mm
  • Apple Watch Nike+ (GPS + Cellular) 42mm
  • Apple Watch Series 3 (GPS + Cellular) Stainless Steel 42mm
  • Apple Watch Herm├Ęs (GPS + Cellular) 42mm
  • Apple Watch Edition (GPS + Cellular) 42mm

The full list of Apple Watch Model Numbers