Apple Watch Ultra 3 (GPS + Cellular) 49mm — Natural Titanium / Light Blue Alpine Loop | MEWM4 | S10 Chip | Always-On LTPO3 OLED Sapphire 3000 Nits | L1+L5 GPS | ECG + Depth Gauge + Water Temp | 100m Water Resistance + 40m Scuba | 42-Hour Battery / 72-Hour Low Power | Siren | Satellite SOS | MIL-STD 810H | watchOS

The Apple Watch Ultra 3 in Natural Titanium with Light Blue Alpine Loop is Apple's most capable and most comprehensively engineered smartwatch — a precision instrument built for the most demanding environments and the most ambitious activities, combining an Always-On Retina display with sapphire crystal under a Grade 5 titanium case, the S10 chip with 64GB of storage, L1 and L5 dual-frequency precision GPS, built-in depth gauge and water temperature sensor, 100-metre water resistance certified for scuba diving to 40 metres and one of the loudest emergency sirens Apple has ever built into a device. The Natural Titanium finish delivers the characteristic warmth and precision of polished aerospace-grade titanium in a form that reads as refined and purposeful rather than simply durable — a material that is simultaneously stronger than stainless steel, significantly lighter and resistant to the corrosion and wear that outdoor environments impose on lesser case materials. The Light Blue Alpine Loop brings a clean, calming and distinctly outdoors-oriented aesthetic to the Ultra 3 — a colour that pairs naturally with the natural titanium's warm metallic finish in a combination that works as comfortably in a hospital consulting room or a boardroom as it does on a mountain summit or at a race start line. At 61.6 grams and fitting wrists from 130 to 210mm, the Ultra 3 is built for extended all-day and all-night wear across every activity and every environment without sacrifice.

The S10 chip with 64-bit dual-core processor and 4-core Neural Engine powers every health, fitness, safety and AI feature of the Ultra 3 with the processing capability to run complex health algorithms, on-device Siri processing and real-time activity analysis simultaneously without battery penalty. The Always-On Retina display with wide-angle OLEDs, LTPO3 technology and a 1Hz minimum refresh rate delivers the Ultra 3's 422 × 514 pixel, 326 PPI image on flat sapphire crystal — one of the hardest transparent materials available for display protection, significantly more scratch-resistant than glass and capable of maintaining optical clarity under the physical contact and abrasion that outdoor and aquatic activities routinely cause to watch displays. Up to 3000 nits of peak brightness makes the Ultra 3 display readable in the most challenging direct sunlight conditions, while 1 nit minimum brightness enables comfortable all-night reading in complete darkness. Night Mode transforms three Apple Watch Ultra faces — Modular Ultra, Wayfinder and Orienteering — into a red-tinted low-light display that preserves night vision during nocturnal outdoor navigation, camping and astronomy. The comprehensive sensor array — electrical heart sensor (ECG), third-generation optical heart sensor, blood oxygen sensor, temperature sensor, depth gauge, water temperature sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope and ambient light sensor — creates the most complete physiological and environmental monitoring system Apple has ever built into a watch.

The water and environmental protection of the Ultra 3 goes further than any previous Apple Watch — 100 metres of water resistance under ISO 22810:2010 for swimming, snorkelling, scuba diving and high-speed water sports, EN13319-certified recreational scuba diving to 40 metres with real-time depth tracking and water temperature monitoring from the wrist, IP6X dust resistance that seals every component against sand, grit and particulate matter, and MIL-STD 810H testing across altitude, high and low temperature, temperature shock, immersion, freeze and thaw, ice and freezing rain and shock and vibration. The built-in siren produces a loud emergency alarm from the watch itself for attracting attention in emergency situations, working in conjunction with the satellite connectivity that enables Emergency SOS, Messages and Find My via satellite connection — included free for two years with the Ultra 3 — for emergency communication in locations where cellular coverage does not reach. The Backtrack feature records GPS waypoints as you travel away from cellular coverage and automatically generates a route back when you want to return — providing a safety net on remote trails and wilderness areas where getting turned around has real consequences. The customisable Action button on the left side of the case provides instant one-press access to any feature you most need — Precision Start for workouts, Backtrack activation, compass waypoint setting, Dive mode launch and Siren — without navigating through menus when speed and simplicity matter.

The battery delivers up to 42 hours of normal use with cellular connectivity and sleep tracking included in a realistic usage pattern — covering nearly two full days of all-day activity without reaching for the charger — and extends to 72 hours in Low Power Mode for multi-day expeditions, ultra-endurance races and remote adventures where charging is not available. The fast-charge system reaches 80% from zero in approximately 45 minutes, 15 minutes of charging delivers up to 12 hours of normal use for the moments you forgot to charge overnight, and 5 minutes of charging delivers up to 8 hours of sleep tracking. The dual-frequency GPS covers L1 and L5 bands for significantly more accurate positioning in urban environments and forested terrain where single-band GPS receivers lose accuracy, alongside GLONASS, Galileo, QZSS and BeiDou for the broadest possible satellite coverage at any location on Earth. Bluetooth 5.3, Wi-Fi 4 on both 2.4GHz and 5GHz bands, the second-generation Ultra Wideband chip and 5G + LTE cellular complete a connectivity suite that keeps the Ultra 3 connected from the summit to the sea floor. The included Light Blue Alpine Loop in the box is a one-piece loop design in soft woven nylon that fits the wrist securely without a buckle and is both comfortable and water-ready. Made with 40% recycled content including 100% recycled titanium in the case and 100% fibre-based packaging, the Apple Watch Ultra 3 runs watchOS — the world's most advanced wearable operating system — and requires iPhone 11 or later with iOS 26 or later.