watchOS | 6 | | | | |
Color display | 1.34 inch, 1.65 inch, OLED | 1.4 inch, Circular Super AMOLED | 1.4 inch, Circular Super AMOLED | 1.4 inch, Circular Super AMOLED | 1.5 inch, Circular Super AMOLED |
Processor | Apple S5 | 1.18 GHz, Samsung Exynos W920, Dual Core | 1.18 GHz, Samsung Exynos W920, Dual Core | 1.18 GHz, Samsung Exynos W920, Dual Core | 1.4 GHz, Samsung Exynos W930, Dual Core |
Dust and waterproof | | | | | |
Internal memory | 512 MB (Size (RAM)), 16 GB (Storage) | 1.5 GB (Size (RAM)), 16 GB (Storage) | 1.5 GB (Size (RAM)), 16 GB (Storage) | 1.5 GB (Size (RAM)), 16 GB (Storage) | 2 GB (Size (RAM)), 16 GB (Storage) |
Battery | 273 mAh | 590 mAh | 410 mAh | 361 mAh | 425 mAh |
Heart rate monitor | | | | | |