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Apple Watch Ultra 3 (renewed) vs Apple Watch Ultra 4

Apple Watch Ultra 3 (renewed) is $219.01 cheaper today, and has been the cheaper of the two on all 50 days we have held a price for both. They differ on chip and battery, as Apple’s own comparison lists them on apple.com. Every figure below was read from the retailer by us. A dash means we have no current figure for that one.

Apple Watch Ultra 3 [GPS + Cellular, 49mm] Black Titanium Case with Black Ocean Band (Renewed)Apple Watch Ultra 4 GPS + Cellular 49mm Smartwatch | Black Titanium Case, Translucent Black Ocean Band - One Size. Advanced Health + Fitness Tracking, 2+ Day Battery
Price today
$554.99Go to Amazon
$774.00Go to Amazon
Record behind itDays with a recorded price in the last 90. We hold a verdict until 7 of them, or until one price has held for 10 days.
50 days on record
50 days on record
Lowest we recordedAnd the last day it was that price. A floor touched last week is a different argument from one touched in March.
$554.99 · Oct 31
$774.00 · Oct 8
Highest we recorded
$643.99
$799.00
Sold by
T4C We Track Serial Numbers
Amazon.com

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How they differ

Specs as Apple’s own comparison lists them on apple.com, the differences first.

Chip
S10
S11
Battery
Up to 42 hours
Up to 50 hours
Case
49 mm titanium
49 mm titanium
Display
Always-On, up to 3000 nits
Always-On, up to 3000 nits
Health apps
ECG, Blood Oxygen, hypertension notifications
ECG, Blood Oxygen, hypertension notifications
Water
100 m, scuba to 40 m
100 m, scuba to 40 m
Apple Watch Ultra 3 (renewed)Apple Watch Ultra 4
$799$554.99SepOct

Both lines are the best price we recorded on each day, on one money axis. Our record for each starts when we started watching it, so a shorter line is a shorter record and not a cheaper history.

How the gap has moved

Across the 50 days we have held a price for both, the gap between them was widest at $219.01 on Oct 27 and narrowest at $136.00 on Sep 15. Apple Watch Ultra 3 (renewed) has been the cheaper of the two on every one of those days. Today it is $219.01.

Measured from our own readings, carried forward day by day — a price stands until we record a different one. It starts on the first day we held a price for both, which is later than the day we began tracking one of them.

What they are

6 attributes the retailers describe differently, first. These are their words, not ours — we record prices, we do not test products.

Color
Black Titanium
Black Titanium w/ Translucent Black Ocean Band
Weight
0.14 pounds
Dimensions
8.43 × 4.65 × 1.5 inches
Model
MF0J4LW/A
MJAY4LS/A
Released
September 2025
September 2026
Warranty
90 Days
Apple One (1) Year Limited Warranty

2 products compared on the record we keep. Nothing here is ranked by what pays us, and neither of these placements was bought. Other model-against-model comparisons.