Question: what is the difference between apple watch 3 vs 5?
Answer: While the Series 5 is available in 40mm and 44mm case options, the Series 3 comes in 38mm and 42mm sizes. At 10.7mm thin, the Series 5 is also slightly sleeker than the 11.4mm Series 3. ... And lastly, the Series 5 runs on a faster processor that Apple claims is twice as fast as the one that powers the S3.