Native resolution 422 × 514 px at 2× · 326 PPI · 2.04″ · 1:1.22. Design at 211 × 257 and export assets at 2×.
| Property | Value |
|---|---|
| CSS viewport (portrait) | 211 × 257 px |
| CSS viewport (landscape) | 257 × 211 px |
| Native resolution | 422 × 514 px |
| Device pixel ratio | 2× |
| Pixel density | 326 PPI |
| Screen diagonal | 2.04 in |
| Panel size | 1.29 × 1.58 in |
| Aspect ratio | 1:1.22 (exact 211:257) |
| Total pixels | 0.22 MP |
| Released | 2025 |
| Operating system | watchOS |
Among the 15 watchs on this site, the Apple Watch Ultra 3 has the 1st largest CSS viewport area. Its 211 px width is 21 px above the 190 px average for this category.
Targeting the Apple Watch Ultra 3 in CSS
Device-specific media queries are brittle — a new model with the same width will not match. Use them for genuine per-device fixes only, and prefer width buckets for layout.
/* Target Apple Watch Ultra 3 specifically */
@media only screen
and (device-width: 211px)
and (device-height: 257px)
and (-webkit-device-pixel-ratio: 2) {
/* … */
}
/* More useful in practice — the width bucket it falls into */
@media (min-width: 211px) { /* … */ }Compare with other Smartwatches models
| Device | CSS viewport | Native | DPR | PPI | Diagonal |
|---|---|---|---|---|---|
| Apple Watch Ultra 3 | 211 × 257 | 422 × 514 | 2× | 326 | 2.04″ |
| Apple Watch Series 11 46mm | 208 × 248 | 416 × 496 | 2× | 330 | 1.96″ |
| Apple Watch Series 11 42mm | 187 × 223 | 374 × 446 | 2× | 330 | 1.77″ |
| Apple Watch Series 10 46mm | 208 × 248 | 416 × 496 | 2× | 330 | 1.96″ |
| Apple Watch Series 10 42mm | 187 × 223 | 374 × 446 | 2× | 330 | 1.77″ |
| Apple Watch Ultra 2 | 205 × 251 | 410 × 502 | 2× | 338 | 1.92″ |
| Apple Watch Series 9 45mm | 198 × 242 | 396 × 484 | 2× | 326 | 1.9″ |
| Apple Watch Series 9 41mm | 176 × 215 | 352 × 430 | 2× | 326 | 1.69″ |
| Apple Watch Series 8 45mm | 198 × 242 | 396 × 484 | 2× | 326 | 1.9″ |
Questions about the Apple Watch Ultra 3 screen
What is the screen size of the Apple Watch Ultra 3?
The Apple Watch Ultra 3 has a 2.04-inch display. In CSS the viewport measures 211 × 257 px in portrait, and the panel itself has 422 × 514 physical pixels at 326 PPI.
What resolution should I design for on the Apple Watch Ultra 3?
Design at 211 × 257 and export assets at 2×. That gives you 422 × 514 px images, which is exactly what the panel renders. Designing directly at 422 × 514 means every measurement is 2 times larger than the CSS values you will write.
What is the device pixel ratio of the Apple Watch Ultra 3?
The Apple Watch Ultra 3 reports a device pixel ratio of 2. One CSS pixel therefore covers 4 device pixels. You can read it in JavaScript with window.devicePixelRatio.
Related
window.innerWidth/innerHeight reported by the stock browser with no browser chrome. See methodology and sources.