Apple Watch Ultra 3 GPS + Cellular 49mm Black Titanium Case with Black Alpine Loop – Large

Design, Display & Fit

• Build: 49 × 44 × 12 mm Grade 5 Black Titanium case (61.8g) with a flat sapphire crystal face.

• Display: Always-On Retina OLED (326 PPI); scales from 1 nit up to 3000 nits peak brightness.

• Band Sizing (Large): While the watch fits wrists up to 210mm overall, selecting the Large Alpine Loop specifically accommodates a wrist circumference range of 165–210 mm.

Performance & Battery

• Core Tech: S10 dual-core processor, 4-core Neural Engine, and 64GB storage.

• Controls: Digital Crown, customizable Action button, side button, and double-tap gestures.

• Battery: Up to 42 hours under normal use, stretching to 72 hours in Low Power Mode. Fast charges to 80% in roughly 45 minutes.

Health, Fitness & Outdoor

• Sensors: ECG/heart rate tracking, blood oxygen levels, skin temperature, depth gauge, and water temperature.

• Health Intelligence: Alerts for sleep apnea, irregular heart rhythms, and hypertension.

• Activity Tracking: Precision tools for running, cycling (power meters/FTP), hiking (offline/topographic maps), and recreational scuba diving down to 40 meters.

Connectivity, Safety & Ruggedness

• Wireless: Dual-frequency GPS (L1 + L5), RedCap 5G/LTE cellular, and 2nd-gen Ultra Wideband.

• Emergency Kit: Integrated 86dB siren, flashlight, Fall/Crash Detection, and satellite/cellular Emergency SOS.

• Durability: 100m water resistance, IP6X dust resistance, and MIL-STD 810H military-grade testing.