Apple Watch Ultra 3

Size and Weight

• Height: 49mm

• Width: 44mm

• Depth: 14.2mm (slightly thinner)

• Weight: ~60g (Titanium case)

Display

• Always-On Retina LTPO OLED display

• Up to 3500 nits peak brightness

• Higher outdoor visibility with improved anti-reflective coating

• 410×502-pixel resolution

• Flat sapphire crystal front

Materials & Durability

• Aerospace-grade titanium (stronger & lighter alloy)

• Sapphire crystal front glass

• WR100 water resistance (100m)

• EN13319 certification for diving

• IP6X dust resistance

• Meets MIL-STD 810H durability standards

Chip

• S10 SiP (next-gen performance upgrade)

• More efficient Neural Engine for faster on-device Siri

• Improved graphics and longer battery endurance

• Enhanced power management for extreme activities

Health & Sensors

• Blood Oxygen app

• ECG (Electrical heart sensor)

• Next-gen optical heart sensor

• Temperature sensing (improved accuracy)

• Depth gauge & water temperature sensor

• High-precision dual-frequency GPS (L1 + L5 with better lock)

• Fall Detection & Crash Detection

• Enhanced altitude and environmental sensors

Fitness & Activity

• Ultra-accurate dual-frequency GPS for running, trails, and cycling

• New endurance training modes

• Diving mode up to 40m

• Customizable Action Button (multi-function profiles)

• Waypoints, Backtrack, Compass precision tools

• Advanced performance metrics for triathletes & ultra runners

Battery Life

• Up to 48 hours normal use

• Up to 80 hours in Low Power Mode

• Improved fast-charging

• More efficient use of GPS and health sensors

Connectivity

• Bluetooth 5.4

• Wi-Fi

• LTE (Cellular models only)

• GPS, GLONASS, Galileo, QZSS, BeiDou

• Enhanced Precision Finding for iPhone

Other Features

• 86-decibel emergency siren

• Dual speakers with improved clarity

• Triple-microphone array with advanced wind reduction

• Night Mode auto-activates in low-light

• On-device Siri with health data access

• watchOS 11 / 12 optimized

• New rugged titanium finishes and band styles