Apple Watch Ultra 3 vs Apple Watch Ultra

Three years separate the first Ultra from the first one with satellite. Apple announced the original on 7 September 2022 and Ultra 3 on 9 September 2025; they reached stores on 23 September 2022 and 19 September 2025, both at $799. The case keeps the same 49 by 44 by 12mm outline and sapphire front, and the 2022 model has a ceramic and sapphire back. The colors changed: the original came only in natural titanium, and Ultra 3 adds black.

Ultra 3 and the original, side by side

Spec	Apple Watch Ultra 3	Apple Watch Ultra
Announced	9 September 2025	7 September 2022
Case	49 × 44 × 12mm Grade 5 titanium	49 × 44 × 12mm titanium
Weight	61.6 g natural; 61.8 g black	61.3 g, natural only
Display	LTPO3, 422 × 514, 1,245 sq mm, 326 ppi	LTPO2, 410 × 502, 1,185 sq mm
Brightness	Up to 3,000 nits; 1 nit minimum	Up to 2,000 nits
Always On	Updates once a second (1Hz)	About once a minute
Chip and storage	S10; 64GB	S8; 32GB
Normal use	Up to 42 hours	Up to 36 hours
Low power	Up to 72 hours in Low Power Mode	Up to 60 hours (launch figure)
Charging	About 80% in 45 minutes	Not published
Satellite	SOS, Messages, Find My	No
Cellular	5G and LTE (model A3281)	LTE and UMTS
Sleep	Stages, Sleep score, sleep apnea notifications	Not listed
Wrist fit	130–210mm	Not published
watchOS 27	Yes	No
iPhone needed	iPhone 11 or later, iOS 26 at launch	iPhone 8 or later, iOS 16
US launch price	$799	$799

Satellite, on top of the safety kit the original already had

The original was built for trouble from day one: an orange Action Button, an 86-decibel siren, dual speakers Apple called 40 percent louder than Series 8’s, and Crash Detection with a high-g accelerometer that measures up to 256 g-forces. What it can’t do is reach anyone over satellite. Ultra 3 sends Emergency SOS, Messages and Find My that way, keeps the Action Button and siren, and adds a flashlight.

Cellular moves from LTE and UMTS to 5G and LTE on model A3281. Both have L1 and L5 dual-frequency GPS with GLONASS, Galileo, QZSS and BeiDou, and Apple has called the newer watch’s GPS the most accurate in a sports watch, which is its claim. The original has the U1 ultra-wideband chip and Ultra 3 a second-generation one; Bluetooth 5.3, dual-band Wi-Fi, Apple Pay and GymKit are on both.

Underwater, both carry a depth gauge and a water-temperature sensor, a 100-meter water rating and a 40-meter limit for recreational scuba; Ultra 3 is certified to EN13319. Both are IP6X for dust and tested to a list of MIL-STD-810H methods.

Brighter, and the seconds keep ticking

The original peaks at 2,000 nits. Ultra 3 reaches 3,000 and can dim to 1 nit, and its LTPO3 panel is a little larger: 422 × 514 pixels at 326 pixels per inch over 1,245 square millimeters, against 410 × 502 and 1,185 on the original’s LTPO2.

Always On changed too. Ultra 3 updates the dimmed face once a second, so a seconds hand keeps ticking with your wrist down; the original updates it about once a minute. Ultra 3 also has Night Mode on the Modular Ultra, Wayfinder and Orienteering faces, plus double tap and wrist flick gestures.

Battery and charging

The 2022 watch is rated for 36 hours of normal use and Ultra 3 for 42, with 72 in Low Power Mode. Ultra 3 charges to about 80% in about 45 minutes; fifteen minutes gives about 12 hours of normal use, and five minutes about eight hours of sleep tracking. Both boxes include a Magnetic Fast Charger to USB-C and one band.

Neither has a GPS workout rating. The 45-hour Max Extended Workout mode belongs to Ultra 4.

Health: the same heart sensors, more sleep features

Neither has the Health Sensing System. Both use a third-generation optical heart sensor and an electrical sensor for ECG, with Blood Oxygen as a wellness feature and a water-temperature sensor.

Ultra 3 lists a wrist temperature sensor, a Sleep app with stages and a Sleep score, sleep apnea notifications and hypertension notifications, with region, age and pregnancy limits; none of them is a diagnosis. Apple doesn’t list a Sleep app or wrist temperature sensor for the 2022 Ultra, and sleep apnea notifications start with Ultra 2.

Ultra 3 lists dedicated running, hiking, cycling, swimming and diving tools, with running form metrics, cycling power-meter support and curated hikes in 63 U.S. national parks. For the original, Apple’s 2022 pitch was the Action Button for starting workouts.

Software and your iPhone

The original launched on watchOS 9 and works with an iPhone 8 or later on iOS 16 or later. Ultra 3 launched on watchOS 26 and needs an iPhone 11 or later on iOS 26 or later.

What the gap buys

Both launched at $799, so any gap you find now is a used-price gap, not a discount Apple set. Spend it on satellite, the 3,000-nit LTPO3 screen, 64GB, 5G, the longer battery and current software. Don’t spend it expecting the Health Sensing System; that’s Ultra 4’s. Check each seller’s price before you buy.