Apple
Device summary
Apple
Apple Watch Series 12 42mm
Full specifications
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2026 |
| Starting price | $399 | $399 |
| Display size | — | — |
| Dimensions | 36.0 mm × 42.0 mm × 9.7 mm | 37.0 mm × 42.0 mm × 9.7 mm |
| Weight | 30 g | 32 g |
| Front material | Ion-X glass | Ceramic Shield 2 |
| Back material | — | — |
| Display | ||
| Display technology | Always-On Retina LTPO3 OLED with wide-angle OLEDs | Always-On Retina LTPO3 OLED with wide-angle OLEDs |
| Resolution | 374 × 446 | 374 × 446 |
| Peak brightness | 2000 nits | 2000 nits |
| Protection | Ion-X glass | Ceramic Shield 2 |
| Performance | ||
| Chipset | Apple S10 SiP | Apple S11 SiP |
| Storage | 64 GB | 64 GB |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Apple Watch Magnetic Fast Charger | Apple Watch Magnetic Fast Charger |
| Battery type | Built-in rechargeable lithium-ion | Built-in rechargeable lithium-ion |
| Connectivity | ||
| Cellular | 5G RedCap and LTE (GPS + Cellular models) | 5G RedCap and LTE (GPS + Cellular models) |
| Wi‑Fi | Wi‑Fi 4 (802.11n) | Wi‑Fi 4 (802.11n) |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Aluminum | Aluminum |
| Ingress protection | Water resistance 50m; IP6X dust resistance | Water resistance 50m; IP6X dust resistance |
| Basic information | ||
|---|---|---|
| Release year | 2025 | 2026 |
| Starting price | $399 | $399 |
| Display size | — | — |
| Dimensions | 36.0 mm × 42.0 mm × 9.7 mm | 37.0 mm × 42.0 mm × 9.7 mm |
| Weight | 30 g | 32 g |
| Front material | Ion-X glass | Ceramic Shield 2 |
| Back material | — | — |
| Display | ||
| Display technology | Always-On Retina LTPO3 OLED with wide-angle OLEDs | Always-On Retina LTPO3 OLED with wide-angle OLEDs |
| Resolution | 374 × 446 | 374 × 446 |
| Peak brightness | 2000 nits | 2000 nits |
| Protection | Ion-X glass | Ceramic Shield 2 |
| Performance | ||
| Chipset | Apple S10 SiP | Apple S11 SiP |
| Storage | 64 GB | 64 GB |
| Expandable storage | No | No |
| Battery & charging | ||
| Charging standard | Apple Watch Magnetic Fast Charger | Apple Watch Magnetic Fast Charger |
| Battery type | Built-in rechargeable lithium-ion | Built-in rechargeable lithium-ion |
| Connectivity | ||
| Cellular | 5G RedCap and LTE (GPS + Cellular models) | 5G RedCap and LTE (GPS + Cellular models) |
| Wi‑Fi | Wi‑Fi 4 (802.11n) | Wi‑Fi 4 (802.11n) |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| NFC | Yes | Yes |
| Build & durability | ||
| Frame | Aluminum | Aluminum |
| Ingress protection | Water resistance 50m; IP6X dust resistance | Water resistance 50m; IP6X dust resistance |
Key differences
The most meaningful measured gaps in size and weight — not an overall winner.
Width
Apple Watch Series 12 42mm
1 mm wider · minor difference
Height
Very similar height
Thickness
Very similar thickness
Weight
Very similar weight
What these size differences mean
Calculated from the dimensions shown, rounded to 0.1 mm and 1 g. Percentages use the smaller measurement as the reference. Fold and rotation settings affect the dimensions compared.
- Apple Watch Series 12 42mm is 1 mm (2.8% relative to Apple Watch Series 11 42mm) wider. Check this difference against the width of your current device and pocket opening.
- Both have the same listed height (42 mm) at the displayed precision. This describes the body outline; screen diagonal alone does not tell you the overall size.
- Both have the same listed thickness (9.7 mm) at the displayed precision. Cases and camera protrusions can change the clearance you need.
- Apple Watch Series 11 42mm is 2 g lighter. This is the listed device-weight difference, not a measured comfort rating.
Use these figures to compare physical size. They do not establish one-handed reach, pocket fit, durability or an overall winner.
Sources and measurement notes
Sizometry compares published specifications and calculates differences. These are not hands-on measurements or tests of comfort, performance or pocket fit.
Apple Watch Series 11 42mm
Apple Watch Series 12 42mm
Check the exact model, year, region and configuration on the linked page. References may cover several variants. Folded and unfolded dimensions differ; cases and camera protrusions may change the space a device needs. Drawings share a relative scale and are not calibrated to life size on your screen.