The Apple Watch Series 12 and Apple Watch Ultra 4 bring new health sensors, a new chip, and more detailed recovery insights to Apple's smartwatch lineup, so how do they compare?
The Apple Watch Series 12 starts at $399, while the Apple Watch Ultra 4 starts at $799. The gap narrows if you want a premium case material, with the titanium Series 12 starting at $699. This year, the Series 12 also gains a ceramic option starting at $899, making it more expensive than the Ultra despite its smaller size and shorter battery life.
The Apple Watch Ultra continues to focus on durability, extended battery life, and additional capabilities for activities like diving and exploration. Our guide helps to answer the question of how to decide which of these two Apple Watches is best for you. The differences between the Apple Watch Series 12 and Apple Watch Ultra 4 are as follows:
Apple Watch Series 12
Apple Watch Ultra 4
Rounded design with a thinner case and front glass that curves at the edges
Rugged design with a thicker case and slightly raised edges to protect the flat front crystal
Aluminum, polished titanium, or polished ceramic case
Blasted titanium case
Aluminum and titanium: 42mm and 46mm case sizes
Ceramic: Marketed as 42mm and 46mm, with actual heights of 43mm and 47mm
49mm case size
42mm aluminum and titanium: 37mm case width
43mm ceramic: 37mm case width
46mm aluminum and titanium: 40mm case width
47mm ceramic: 41mm case width
49mm titanium: 44mm case width
Aluminum and titanium: 9.7mm case depth
Ceramic: 9.85mm case depth
12mm case depth
Weighs 31.5 to 52.9 grams depending on case size, material, finish, and connectivity
Natural titanium: 63.0 grams
Black titanium: 63.1 grams
Aluminum: Ceramic Shield 2 front glass
Titanium and ceramic: Sapphire front crystal
Sapphire front crystal
42mm: 374 by 446 pixels
46mm: 416 by 496 pixels
422 by 514 pixels
42mm: 970 sq mm display area
46mm: 1,196 sq mm display area
1,245 sq mm display area
Up to 2,000 nits peak brightness
Up to 3,000 nits peak brightness
Exclusive Wayfinder, Modular Ultra, and Orienteering faces
Night Mode on Apple Watch Ultra faces
Customizable Action button, including Precision Start for workouts
86-decibel Siren to attract attention
Single speaker
Dual speakers
Single microphone with Voice Isolation
Three-microphone array with beamforming and wind noise mitigation
Aluminum: GPS or GPS + Cellular options
Titanium and ceramic: GPS + Cellular
GPS + Cellular on all models
U.S. TDD cellular bands: 5G n38, n40, and n41; LTE 38, 39, 40, and 41
U.S. TDD cellular bands: 5G n38, n40, n41, and n53; LTE 38, 39, 40, 41, and 53
Satellite communications for Emergency SOS, Messages, and Find My
Precision L1 GPS
Precision dual-frequency GPS (L1 and L5)
GPS, GLONASS, Galileo, QZSS, and BeiDou support
GPS, Galileo, QZSS, and BeiDou support
Water resistant to 50m
Water resistant to 100m
Suitable for swimming and snorkeling
Suitable for swimming, snorkeling, high-speed water sports, and recreational scuba diving to 40m
Depth gauge and Depth app to 6m
Depth gauge and Depth app to 40m
Tested to MIL-STD 810H
EN13319 certification for recreational scuba diving
Recommended ambient operating temperature of 0°C to 35°C
On-wrist operating temperature of -20°C to 55°C
Always-on altimeter
Always-on altimeter with expanded operating range from -500m to 9,000m
Operating altitude from 0m to 3,000m
Operating altitude from -500m to 9,000m
Up to 24 hours of normal use
Up to 50 hours of normal use
Up to 38 hours in Low Power Mode
Up to 84 hours in Low Power Mode
Up to 10 hours of standard outdoor workout tracking
Up to 18 hours of standard outdoor workout tracking
Up to 25 hours in Extended Workout mode with full GPS and heart rate readings
Up to 45 hours in Max Extended Workout mode, retaining GPS readings every second
Charge from 0 to 80% in about 30 minutes
Charge from 0 to 80% in about 45 minutes
15 minutes of charging for up to 12 hours of normal use
15 minutes of charging for up to 18 hours of normal use
Aluminum: Dark Bronze, Light Gold, Black, and Space Gray
Titanium: Radiant Gold and Natural
Ceramic: Pearl White and Night Blue
Natural Titanium or Black Titanium
Hermès: Silver or Radiant Gold titanium
Hermès: Natural titanium
40% recycled content in aluminum and titanium models
45% recycled content
Aluminum: Starts at $399
Titanium: Starts at $699
Ceramic: Starts at $899
Hermès: Starts at $1,399
Standard: Starts at $799
Hermès: Starts at $1,499
For most users, the Apple Watch Series 12 is the better choice. It offers the same performance, health sensors, Readiness insights, and Audio Intelligence features as the Ultra 4 in a thinner, lighter device. The aluminum model delivers these benefits for $400 less, making it the stronger option for everyday use and regular workouts.
The Ultra 4's most broadly useful advantage is battery life. Its longer endurance makes overnight wear and extended workouts easier to fit around charging. You do not need to be an endurance athlete to appreciate less frequent charging, but the premium is easier to justify if the Series 12 cannot comfortably cover your usual activities and charging habits.
For hiking away from cellular coverage, recreational scuba diving, or very long events, the Ultra has a clearer purpose. Satellite communications, dual-frequency GPS, greater water resistance, and extended workout modes address needs that the Series 12 cannot fully meet. The Action button and brighter display may also appeal to enthusiasts who simply want more capable hardware.
Size and appearance remain substantial trade-offs. The Ultra is considerably bulkier and heavier despite offering a display only slightly larger than the 46mm Series 12's. The Series 12 is more discreet and offers polished titanium and ceramic finishes, making it better suited to buyers who prioritize comfort or appearance. Try on the Ultra before buying if you are unsure about its size.
The decision becomes closer if you already want the titanium Series 12, since its starting price is just $100 below the Ultra's. At that point, paying more for longer battery life and additional hardware is reasonable if you are comfortable with the larger case. The $899 ceramic Series 12 is primarily a choice of material and finish; choose it because you prefer its appearance, rather than expecting more capabilities than the $799 Ultra.
