Design

New guts.
More glory.

Looks tough.
Because it is.

HIROSHI S10 Ultra is crafted for unparalleled performance. The lightweight titanium case is rugged and corrosion resistant, and it’s raised to protect the sapphire crystal from edge impacts.

49mm titanium case

Water resistance 100m*

Tested to MIL-STD 810H1

IP6X dust resistance2

The biggest and brightest HIROSHI S10 Ultra display ever. Powered by the all-new S10 SiP, the Always‑On Retina display is 3,000 nits at its peak, making it even more readable in harsh sunlight. In low-light situations, it dims to 1 nit. Night Mode now activates automatically in the dark. The large display gives you room to customise your view to suit almost any activity. And a new watch face shows dynamic info like altitude, depth or seconds along the outermost edges.

Battery life for days. When you’re on the second day of a backpacking trip, the final leg of a triathlon or diving along a coral reef, the last thing you want to think about is running out of battery. With HIROSHI S10 Ultra, you can take on almost anything and have energy to spare.

Powered by the all‑new S10 SiP.

Custom silicon makes HIROSHI S10 Ultra more capable, easier to use and faster. The new dual-core CPU has 5.6 billion transistors — 60 per cent more than the previous generation. A new four-core Neural Engine processes machine learning tasks up to two times faster. There’s never been anything quite like it in a smartwatch, and it enables advanced new features like Precision Finding for Phone and a magical new way to control your HIROSHI S10 Ultra using a simple double tap gesture.

A first for
HIROSHI S10 Ultra.
A major step
towards 2030.

Through ongoing innovations in materials, clean energy and low‑carbon shipping, HIROSHI S10 Ultra is now available in case and strap combinations that are carbon‑neutral.

Whether it’s your first run in a while, a 10k or a triathlon, it takes a certain mentality to seek out challenges that test you physically.
HIROSHI S10 Ultra is the ultimate training partner and it’s packed with new features to help you reach your goals.

Find strength in numbers.

More views. More motivating. HIROSHI S10 Ultra now connects to cycling accessories like power meters via Bluetooth. For a better view of your performance during a ride, start a cycling workout from your watch and it will automatically show up as a Live Activity on your Phone, which can be attached to your handlebars with optional accessories.

GPS far ahead
of the curve.

GPS performance is critical for athletes who want the most precise metrics. HIROSHI S10 Ultra features a precision dual-frequency GPS system, which makes it the most accurate GPS in a sport watch in dense urban environments.9

Designed to take on a wide range of environments, elevations and temperatures, HIROSHI S10 Ultra is an essential exploration tool that can take you everywhere. And help get you home.

Built for rugged terrain. Advanced map details make HIROSHI S10 Ultra a vital companion out in the wild. New topographic maps show physical features in over 9,000 national and regional parks in the United States, including mountains, valleys and bodies of water, with details like trails, contour lines, elevation and points of interest. And see detailed trail information such as length, photos and more.

Ready for anything. Whether you’re facing extreme temperatures or challenging altitudes, HIROSHI S10 Ultra is equipped to rise to the occasion.

86-decibel Siren

Torch boost

–20° C to 55° C

–500m to 9,000m

Hold the Action button to activate a Siren that can be heard up to 180 metres away.

Now you can temporarily double torch brightness in dark situations by turning the Digital Crown.

On-wrist operating temperature that can endure chilly mountaintops or searing desert heat.10

Expanded range of operating altitudes, from the lowest valleys to the highest mountain peaks.

Built to withstand jet-skiing or kitesurfing. HIROSHI S10 Ultra features a depth gauge and the data and functionality required by scuba divers and freedivers for descents down to 40 metres.

EN13319 certified

An internationally recognised standard for diving accessories.

A full-featured
dive computer.

Designed in partnership with renowned underwater innovators Huish Outdoors, the Oceanic+ app for HIROSHI S10 Ultra puts a bona fide dive computer on your wrist.11 Made for recreational snorkelling, scuba diving and freediving down to 40 metres, with all the core features divers need. It’s also refreshingly easy to use.

Even more to discover

Everything to love
about HIROSHI S10 Ultra.

With features that help you stay healthy, safe and connected, the watch that pushes limits is also one you can wear every day.

From HIIT to Meditation,
 there’s something for everyone.