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 4 (49 mm natural titanium)
An overall editorial verdict is not available for this pair yet. Your priorities and current prices can change the better choice.
Apple Watch Ultra 4 (49 mm natural titanium)
Not rated yet
US launch / reference: $799
US availability: September 18, 2026
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 4 (49 mm natural titanium) for
- Dual-frequency GPS and physical Action button
- Sapphire display cover
- Up to 50-hour normal-use battery claim
Tradeoff: Large 49 mm case
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 4 (49 mm natural titanium) |
|---|---|---|
| Configuration | 42 mm GPS; dark bronze aluminum case; Olive Sport Band | 49 mm GPS + Cellular; natural Grade 5 titanium; Sand Trail Loop |
| Dimensions | 42 × 37 × 9.7 mm (height × width × depth) | 49 × 44 × 12 mm (height × width × depth) |
| Weight | 32.2 g (aluminum GPS) | 63.0 g (natural titanium) |
| Display | LTPO3 always-on OLED; 374 × 446; 326 ppi; peak 2,000 nits | LTPO3 always-on OLED; 422 × 514; 326 ppi; peak 3,000 nits |
| Front cover | Ceramic Shield 2 | Flat sapphire crystal |
| Chip | S11; 64-bit dual-core CPU; 4-core Neural Engine | S11; 64-bit dual-core CPU; 4-core Neural Engine |
| Storage | 64 GB | 64 GB |
| Connectivity | Wi-Fi 4, 2.4/5 GHz; Bluetooth 5.3 | Wi-Fi 4, 2.4/5 GHz; Bluetooth 5.3; 5G RedCap/LTE; satellite communications |
| Positioning | L1 GPS; second-generation Ultra Wideband chip | Dual-frequency GPS; second-generation Ultra Wideband chip |
| Sensors | Optical/electrical heart sensors; temperature sensor; 6 m depth gauge; altimeter | Optical/electrical heart sensors; temperature sensor; depth gauge; water-temperature sensor |
| Battery | Apple claims up to 24 hours normal use, or 38 hours Low Power Mode | Apple claims up to 50 hours normal use, or 84 hours Low Power Mode |
| Charging | Apple claims 0–80% in about 30 minutes with compatible fast-charging equipment | Apple claims 0–80% in about 45 minutes with compatible fast-charging equipment |
| Resistance | 50 m water resistance, ISO 22810:2010; IP6X dust resistance | 100 m water resistance; IP6X; recreational scuba depth limit 40 m |
| Compatibility | iPhone 11 or later, or iPhone SE (2nd generation or later); iOS 27+ | iPhone 11 or later, or iPhone SE (2nd generation or later); iOS 27+ |
| Cellular | Not included on this GPS configuration | Not documented |
| Controls | Not documented | Digital Crown, side button and customizable Action button |
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 4 (49 mm natural titanium)
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.