Apple Watch Ultra 4

Apple · Audio & Tech

Apple Watch Ultra 4 review

The best smartwatch for iPhone owners who hike, run, dive or travel, with roughly two days of battery and dual-frequency GPS. Reviewers say Ultra 3 owners can skip it; the design is unchanged, and some launch software features arrived after the watch shipped.

Apple's rugged 49 mm titanium smartwatch, announced September 9, 2026 and available from September 18. It moves to the S11 chip and a new Health Sensing System, and raises rated battery life to up to 50 hours (84 hours in Low Power Mode).

9.1/10SnipSnapy score · Excellent

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Who should buy this

iPhone owners who want a durable outdoor and endurance-sports watch with the longest battery life in Apple's lineup.

Pros & Cons

What We Like

  • Up to 50 hours of normal use, up to 84 hours in Low Power Mode
  • 3000-nit Always-On display behind flat sapphire crystal
  • Precision dual-frequency GPS and satellite Emergency SOS, Messages and Find My
  • Rated to 100 m water resistance and certified for recreational dives to 40 m
  • Reviewers praise heart-rate accuracy from the new Health Sensing System

What to Consider

  • Design is essentially unchanged from Ultra 3, so it is a small upgrade for recent owners
  • Only works with iPhone
  • Some multi-sport Garmin watches still last longer per charge
  • Some launch software features arrived after the watch shipped

SnipSnapy score

9.1/10
Excellent
Fitness
9.4
Durability
9.6
Display
9.3
Battery
8.9
Value
8.3
✎ Researched by Mobile TeamUpdated 2026-10-29How we score →

Specifications

Case49 mm Grade 5 titanium
DisplayAlways-On Retina LTPO3 wide-angle OLED, up to 3000 nits, flat sapphire crystal
ChipS11 with 64-bit dual-core processor and 4-core Neural Engine
Battery lifeUp to 50 hours; up to 84 hours in Low Power Mode
Water resistance100 m (ISO 22810:2010); EN13319 recreational diving to 40 m
Weight2.22 oz (63.0 g, natural titanium)
ConnectivityCellular (5G RedCap and LTE), dual-frequency GPS, satellite communications

Key features

  • ✦ Health Sensing System with more frequent heart rate and HRV readings
  • ✦ Readiness and recovery scores
  • ✦ Satellite Emergency SOS, Messages and Find My
  • ✦ Customisable Action button
  • ✦ IP6X dust resistance

Where to buy

StoreLink
A
Amazon
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Frequently Asked Questions

Should I upgrade from Apple Watch Ultra 3?
Most reviewers say no. The Ultra 4 adds the S11 chip, eight more hours of rated battery life and the new health sensors, but the case and display are unchanged. Owners of the original Ultra or Ultra 2 see the biggest gains.
Apple Watch Ultra 4 or Apple Watch Series 12?
The Ultra 4 has a larger titanium case, a brighter display, much longer battery life, dual-frequency GPS, dive certification and satellite messaging. The Series 12 is lighter and suits everyday wear and lighter fitness use.

How we pick and rate products

1

Shortlist what's worth buying

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2

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3

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SnipSnapy is reader-supported. As an Amazon Associate, SnipSnapy earns from qualifying purchases. Buying through our links can earn us a commission at no extra cost to you, and never changes what we recommend. How we make money