Home / Smartwatch / Comparison

Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 6

Apple Apple Watch Ultra 3 ($799) vs Apple Apple Watch Series 6 ($83) — side-by-side specs, weight, pros and cons to help you pick the right smartwatch.

Apple Apple Watch Ultra 3
Apple
Apple Watch Ultra 3
$799
Best Smartwatch
Check Price →
Apple Apple Watch Series 6
Apple
Apple Watch Series 6
$83
Check Price →
Spec-by-spec
SpecApple Apple Watch Ultra 3Apple Apple Watch Series 6
Price$799$83
Weight61g36.5g
Case49mm Titanium—
Battery36h / 72h low power—
GPSDual-frequency L1+L5—
WR100m50m
DisplayAlways-on LTPOAlways-on Retina OLED
ChipS10S6, 64-bit dual-core
Sensors—Blood oxygen (SpO2) + ECG + heart rate
Charging—20% faster than Series 5
Weight—36.5g (Apple published, 44mm Aluminum)
Pros & Cons

Apple Apple Watch Ultra 3

  • 36h battery life
  • Dual-frequency precision GPS
  • Satellite SOS emergency
  • Rugged titanium case
  • Best Apple Watch ever made
  • $799 very expensive
  • iPhone-only ecosystem
  • Large 49mm case size

Apple Apple Watch Series 6

  • Blood oxygen sensor, a meaningful addition over Series 5
  • Faster S6 chip, noticeably snappier in daily use
  • Faster charging than any earlier Series watch
  • Always-on display carried over from Series 5
  • Blood oxygen readings are wellness-only, not medical grade
  • watchOS support window is closing
  • Aluminum case shows wear more than steel or titanium on a used unit
  • No always-on altimeter, that came later with Ultra
Apple Apple Watch Series 6 is the better value at $83. Both are part of our curated smartwatch index — tap through to check current pricing.
More Smartwatch comparisons
Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 11Apple Apple Watch Ultra 3 vs Apple Apple Watch SE (3rd Gen)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 10 (46mm)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 9 (45mm)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 8 (45mm)Apple Apple Watch Ultra 3 vs Apple Apple Watch Series 7 (45mm)