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  4. Apple Watch Ultra 4
SmartwatchAppleRead 2 Oct 2026

Apple Watch Ultra 4

Apple Watch Ultra 4

Display

Pixel density
326 ppiapple.com · read 2 Oct 2026
Peak brightness
3,000 nitsapple.com · read 2 Oct 2026
Always-on display
Yesapple.com · read 2 Oct 2026

Performance

Chip
S11apple.com · read 2 Oct 2026
Storage
64 GBapple.com · read 2 Oct 2026

Battery and charging

Battery (normal use)
50 happle.com · read 2 Oct 2026
Battery (low power mode)
84 happle.com · read 2 Oct 2026
Workout tracking
18 happle.com · read 2 Oct 2026
Fast charging
Up to 80% charge in about 45 minutesapple.com · read 2 Oct 2026

Size and build

Weight (lightest version)
63 gapple.com · read 2 Oct 2026
Water resistance
100 mapple.com · read 2 Oct 2026
Dust rating
IP6Xapple.com · read 2 Oct 2026

Connectivity

Cellular version
Yesapple.com · read 2 Oct 2026
Dual-frequency GPS
Yesapple.com · read 2 Oct 2026
Ultra Wideband
Yesapple.com · read 2 Oct 2026
Wi-Fi
Wi-Fi 4apple.com · read 2 Oct 2026
Bluetooth
5.3apple.com · read 2 Oct 2026

Health and sensors

ECG
Yesapple.com · read 2 Oct 2026
Blood oxygen
Yesapple.com · read 2 Oct 2026
Temperature sensing
Yesapple.com · read 2 Oct 2026
Sleep apnea notifications
Yesapple.com · read 2 Oct 2026
Hypertension notifications
Yesapple.com · read 2 Oct 2026