Apple watch compare 6 and 9 July 8, 2019 16 32 64 128 Apple watch compare series 6 and 9 Apple watch 6 and 9 comparison Apple watch 6 and 9 Apple watch series 6 and 9 Compare apple watch 6 and 9 specs Apple watch 6 vs 7 comparison Apple watch сравнение 6 и 7 Apple watch 6 series vs 7 Apple watch series 6 44mm vs 7 Compare apple watch 8 and 7