Question: what are the differences between the series 3 and series 4 apple watch?
Answer: To spot the differences we need to take a closer look. The Series 4 has a slimmer body, but its screen is actually 35 percent larger than the 38-millimeter version of the Series 3 and 32 percent larger than the larger 42mm Series 3. ... The Apple Watch Series 3 (left) has thicker bezels with square corners.