The construction is of high quality: toughened glass for the front, aluminum and ceramic case for the internal face, which includes the sensors. The watch gains IP6X certification against dust and maintains the WR50 water resistance of previous models. Apple assures that it has improved the resistance of the materials, it is not something that I have been able to prove: in the weeks that I have been with the watch it still has no scratches (and I hope it continues like this).
The model that I acquired, and on which this analysis is concerned, is the 45 mm one in blue with the Loop strap braided in that same color. The external appearance is exquisite, the tonality fits very well with the style of the Apple Watch 7. It is somewhat thick (quite) and also large, although not exaggerated. On a generously sized doll, her appearance is not exaggerated.