Apple watch series 9 45mm cellular costco July 8, 2019 16 32 64 128 Apple watch series 9 gps + cellular 45mm costco Apple watch 9 45mm cellular costco Apple watch series 7 45mm gps + cellular Apple watch 8 series 45 Apple watch series 5 44mm cellular Apple watch 4 series 40mm Apple watch series 4 42mm