Apple Watch Series 12 (42 mm GPS aluminum)
Not rated yet
US launch / reference: $399
US availability: September 18, 2026
Manufacturer source ↗Apple Watch Series 12 (42 mm GPS aluminum) vs Apple Watch Ultra 3
An overall editorial verdict is not available for this pair yet. Your priorities and current prices can change the better choice.
Apple Watch Ultra 3
94/100 editorial
US launch / reference: $799
Manufacturer source ↗Start with the tradeoffs
Consider Apple Watch Series 12 (42 mm GPS aluminum) for
- Compact 42 mm aluminum configuration
- Always-on display with 2,000-nit specified peak brightness
- Fast charging support
Tradeoff: GPS configuration has no independent cellular connection
Consider Apple Watch Ultra 3 for
- 49 mm titanium chassis
- 3000 nit peak display
- Up to 42 hours normal use
Tradeoff: Same chassis as Ultra 2
Scores and judgments are editorial. Specdex does not run an in-house benchmark lab. Manufacturer claims and independent measurements may use different test conditions.
Specifications side by side
Arrows indicate a higher capacity, higher power rating, or lower weight/time for comparable simple quantities. They do not establish overall product quality. Unknown values remain unavailable.
| Specification | Apple Watch Series 12 (42 mm GPS aluminum) | Apple Watch Ultra 3 |
|---|---|---|
| Configuration | 42 mm GPS; dark bronze aluminum case; Olive Sport Band | Not documented |
| Dimensions | 42 × 37 × 9.7 mm (height × width × depth) | Not documented |
| Weight | 32.2 g (aluminum GPS) | Not documented |
| Display | LTPO3 always-on OLED; 374 × 446; 326 ppi; peak 2,000 nits | Up to 3000 nits |
| Front cover | Ceramic Shield 2 | Not documented |
| Chip | S11; 64-bit dual-core CPU; 4-core Neural Engine | Apple S10 chip |
| Storage | 64 GB | Not documented |
| Connectivity | Wi-Fi 4, 2.4/5 GHz; Bluetooth 5.3 | Not documented |
| Positioning | L1 GPS; second-generation Ultra Wideband chip | Not documented |
| Sensors | Optical/electrical heart sensors; temperature sensor; 6 m depth gauge; altimeter | Not documented |
| Battery | Apple claims up to 24 hours normal use, or 38 hours Low Power Mode | Up to 42 hours; up to 72 hours in Low Power Mode |
| Charging | Apple claims 0–80% in about 30 minutes with compatible fast-charging equipment | Not documented |
| Resistance | 50 m water resistance, ISO 22810:2010; IP6X dust resistance | Not documented |
| Compatibility | iPhone 11 or later, or iPhone SE (2nd generation or later); iOS 27+ | Not documented |
| Cellular | Not included on this GPS configuration | Not documented |
| Case | Not documented | 49 mm titanium |
| Water resistance | Not documented | 100 m (ISO 22810:2010) |
| Starting price | Not documented | $799 |
Apple Watch Series 12 (42 mm GPS aluminum)
Prices & availability
US launch / reference: $399. This is not a current retailer offer.
Checking current offers…
Price history
History appears when an approved retailer provides observations.
Prices apply to the listed configuration and condition. Tax and shipping are not included unless the retailer states otherwise.
Apple Watch Ultra 3
Prices & availability
US launch / reference: $799. This is not a current retailer offer.
Checking current offers…
Price history
History appears when an approved retailer provides observations.
Prices apply to the listed configuration and condition. Tax and shipping are not included unless the retailer states otherwise.