Question: what are all the differences between the apple watch series 3 models?
Answer: The cheapest version has a smaller (38mm watch face). The $429 version has cellular connectivity, a bigger watch face (42mm) and can fit bigger wrists. ... The 42mm aluminum Apple Watch Series 3 weighs in at 34.9 grams, while the stainless steel model weighs 52.8 grams. That's a difference of almost 18 grams or .