Description
Apple Watch Ultra 4, announced in September 2026, is the toughest watch Apple sells. The 49 mm blasted titanium case looks familiar, but inside it moves to the S11 chip and battery life rises to up to 50 hours of normal use. It also gains the same health upgrades as Series 12, including heart rate readings every five seconds and a new Readiness view.
Key specs
| Case | 49 mm blasted titanium, natural or black |
|---|---|
| Chip and storage | S11, 64 GB |
| Display | Up to 3,000 nits, sapphire front crystal |
| Battery | Up to 50 hours; up to 84 hours in Low Power Mode |
| GPS | Dual-frequency L1 and L5 |
| Water resistance | 100 m; recreational scuba to 40 m |
| Satellite | Emergency SOS, Messages and Find My |
| Cellular | 5G built in |
| Health | Hypertension and sleep apnea notifications, Sleep Score, Readiness |
Who it’s for
Ultra 4 makes sense if you swim in open water, dive recreationally, run trail ultras or hike in places with patchy coverage. The 86-decibel siren, Action button and dual-frequency GPS are aimed at outdoor use. For everyday wear and office life, Series 12 is lighter and thinner.
What to check before you buy
- The Ultra 4 case looks almost identical to the Ultra 3, so confirm the model on the box label and in the listing title.
- It works only with an iPhone; check that your phone is compatible before buying.
- Cellular and satellite features depend on carrier and country support, so Canadian buyers should confirm the model sold for North America.
- Make sure the watch is sealed and not tied to another Apple account; see our safe buying checklist for more checks.
How buying works
The button on this page opens current new listings for this model on eBay. eBay handles payment and the seller ships the item. Purchases are covered by the eBay Money Back Guarantee when an item doesn’t arrive or isn’t as described. Prices change often, so confirm the final price, shipping and the seller’s return policy on eBay.
