Question: what is the difference between apple watch won't an apple watch three?
Answer: The cellular version of the Series 3 has a red dot on the crown, while the Series 5 only has an outline. The first major difference between the Apple Watch Series 5 and the Series 3 is the display. ... And even with the always-on display, the battery of the Series 5 doesn't drain any faster than the Series 3's.