Apple Watch Case Size Guide
Find out what case size your Apple Watch model has.
| Apple Watch Model | Case Size |
| Series 1 | 38mm or 42mm |
| Series 2 | 38mm or 42mm |
| Series 3 | 38mm or 42mm |
| Series 4 | 40mm or 44mm |
| Series 5 | 40mm or 44mm |
| Series 6 | 40mm or 44mm |
| SE | 40mm or 44mm |
| Series 7 | 41mm or 45mm |
| Series 8 | 41mm or 45mm |
| Series 9 | 41mm or 45mm |
| Ultra | 49mm |