Apple Watch Ultra 4 review

Apple Watch Ultra 4 has the most capable hardware on this list, but its $799 price keeps it behind Series 12 overall. Apple's comparison lists the same health set as Series 12, including hypertension notifications, the ECG app, the Blood Oxygen app and sleep apnea notifications, and adds Emergency SOS via satellite, a siren, precision dual-frequency GPS and cellular plus satellite connectivity. The 49mm titanium case is water resistant to 100m for swimming, snorkeling, scuba and high-speed water sports, with a depth gauge to 40m. Battery is the main reason to pay more: up to 50 hours, or 84 hours in Low Power Mode, and 15 minutes of charging adds up to 18 hours. The display reaches 3000 nits. Like every Apple Watch it needs an iPhone 11 or later on iOS 27. We compared documented features and published prices only.

Who it is for

iPhone owners who hike, dive or want two-day battery

Price

From $799 one-time.

New Apple Watch Ultra 4 From $799
Quoted from the vendor pricing page on November 12, 2026.

Key features

• 49mm titanium case with a display up to 3000 nits
• Up to 50 hours of battery, or up to 84 hours in Low Power Mode
• Emergency SOS via satellite and a siren
• Water resistant to 100m with a depth gauge to 40m
• Precision dual-frequency GPS and cellular plus satellite connectivity

Strengths and weaknesses

• Strength: Roughly double the Series 12 battery: 50 hours against 24
• Strength: Same hypertension notifications and ECG app as Series 12
• Strength: Rated for scuba and high-speed water sports
• Weakness: Costs $799, twice the Series 12 starting price
• Weakness: One 49mm size only
• Weakness: Works only with iPhone 11 or later on iOS 27 or later

Key facts

• Price: From $799
• Phone: iPhone 11 or later, iOS 27 or later
• Battery: Up to 50 hours, 84 in Low Power Mode
• Water resistance: 100m, depth gauge to 40m
• Case: 49mm titanium

Where it ranks

Apple Watch Ultra 4 is No. 5 in our Best Smartwatches verdict.