Head to head · 2 watches

Watch Series 4 Aluminum vs Watch Ultra 4

Verified specs side by side. The green tick marks the better value on each measurable row.

Comparing 2 watches
Watch Series 4 Aluminum
Watch Series 4 Aluminum—Score pending
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Watch Ultra 4
Watch Ultra 48.3Very good· Top score
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The short verdict

Watch Ultra 4 is scored, the other is pending

We haven’t scored the Watch Series 4 Aluminum yet. Compare the measured differences and prices below.

Watch Series 4 Aluminum
—
Watch Ultra 4
8.3
Choose the Watch Series 4 Aluminum if
  • Easier one-handed use (1.8" vs 1.9")
  • Lighter in the hand (37 vs 63 g)
  • Cheaper today ($325 vs $690)
Check price at eBay →
Choose the Watch Ultra 4 if
  • iPhone owners who hike, dive or run long and want Apple's longest battery and satellite messaging.
Check price at eBay →
At a glance

Key differences

Measured differences only. Ties and tiny gaps are left out.
Why pick theWatch Series 4 Aluminum3 wins
−0.1"Easier one-handed use1.8" vs 1.9"
−26 gLighter in the hand37 vs 63 g
−$365Cheaper today$325 vs $690
Check priceBest price · eBay · check the store for today’s priceCheck price at eBay ↗
Why pick theWatch Ultra 41 win
+8%Larger screen1.92 vs 1.78 in
Check priceBest price · eBay · check the store for today’s priceCheck price at eBay ↗
Full specs

Side-by-side specifications

Battery1 difference
Battery life
18 mAh
50 mAh
Display5 differences
Screen size
1.78"
1.92"
Panel
LTPO AMOLED capacitive touchscreen
Always-On Retina LTPO3 OLED
Display type
LTPO AMOLED
OLED
Resolution
448 x 368
422 x 514
Refresh rate
—
1 Hz
Performance2 differences
Chipset
Dual-core
S11 chip, dual-core
Storage
16 GB
64 GB
Connectivity2 differences
Bluetooth
Bluetooth 5.0
5.3
Cellular
LTE
5G RedCap/LTE
Body2 differences
Weight
37 g
63 g
Water resistance
50 m (ISO 22810:2010) + IP6X
100 m (ISO 22810:2010) + IP6X

Specs verified against manufacturer data. Prices in USD before tax; we may earn a commission from qualifying purchases.

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