HĐH:watchOS 5.0, upgradable to 7.1
CPU:Apple S4
Bộ nhớ:16GB 1GB RAM
Pin:Li-Ion 292 mAh (1.12 Wh), non-removable
HĐH:watchOS 4.0, upgradable to 7.1
CPU:Apple S3
Bộ nhớ:16GB 768MB RAM
Pin:Non-removable Li-Ion 279 mAh battery (1.07 Wh)
HĐH:watchOS 5.0, upgradable to 7.1
CPU:Apple S4
Bộ nhớ:16GB 1GB RAM
Pin:Li-Ion 292 mAh (1.12 Wh), non-removable
HĐH:watchOS 4.0, upgradable to 7.1
CPU:Apple S3
Bộ nhớ:16GB 768MB RAM
Pin:Non-removable Li-Ion 279 mAh battery (1.07 Wh)