Read the Mountain. Trust Your Bearings.
AltiTrek is an altimeter watch built for hiking, mountain days and outdoor travel. It combines built-in GPS with altitude, barometric-pressure and compass tools, plus an IP68-rated body, Low-Temperature Mode, a 1.43-inch AMOLED and wrist-based wellness tracking.
✓ Free shipping ✓ 30-day return window ✓ iPhone & Android support*
AltiTrek brings elevation, pressure, direction and route tools together with a rugged outdoor design and everyday wellness features.
Built-in GPS supports route and movement tracking for listed outdoor activities, with supported route information available through the watch and companion app.
Review altitude and barometric-pressure information for useful elevation and environmental context while outdoors.
An onboard compass adds quick bearing information alongside altitude and pressure data when you need orientation context.
The listed IP68 rating provides dust and water resistance for everyday outdoor exposure; follow current care instructions for water use.
A sharp 1.43-inch 466×466 AMOLED with full-screen touch stays readable in bright sun.
A dedicated Low-Temperature Mode is designed to support operation in colder outdoor conditions.

AltiTrek can track wrist-based heart-rate patterns through the day when monitoring is enabled, alongside supported steps, distance and calorie estimates in the Fitbeing app.
AltiTrek brings supported heart-rate, SpO₂ and blood-pressure wellness estimates into the Fitbeing app for personal trend awareness. Wrist readings are not a substitute for clinical measurements or medical advice.


Alongside altitude and navigation tools, AltiTrek includes wrist-based SpO₂ spot checks, blood-pressure wellness estimates and cycle-tracking features. Use these for personal wellness trends rather than decisions about altitude illness, treatment or diagnosis.
For altitude-related symptoms or safety decisions, use appropriate equipment and professional guidance rather than wrist wellness estimates.
Wear AltiTrek overnight to review estimated sleep duration and stage-related trends in the Fitbeing app, then compare your own pattern over time.


AltiTrek supports GPS trajectory and track-back features for listed outdoor activities, along with real-time movement-direction information and 60+ published sport modes. Carry dedicated navigation tools where route-finding is safety-critical.
Built-in GPS pairs with altitude, barometric-pressure and compass information so you can check elevation context, pressure trends and bearing from the wrist during outdoor use.


The IP68-rated body is designed for dust and everyday water exposure, while Low-Temperature Mode supports use in colder conditions. Water resistance can change with wear, so follow current care instructions.
The 530mAh battery is listed for around five to seven days of active use and 40+ days on standby, with magnetic charging. Actual runtime varies with GPS, display, sensors, temperature and other settings.

| Feature | REXQU AltiTrek | What to Know |
|---|---|---|
| Altimeter / altitude data | ✓ Included | Useful elevation context for outdoor activity; not professional surveying equipment |
| Barometer | ✓ Included | Shows barometric-pressure information and trends |
| Compass | ✓ Included | Useful bearing aid; carry dedicated navigation gear for safety-critical routes |
| Built-in GPS | ✓ Included | Supports listed route and trajectory features |
| Track-back | ✓ Listed | Use as a convenience feature, not your only backcountry navigation method |
| Sport modes | 60+ listed | Availability can vary with software/app version |
| Cold-weather mode | ✓ Low-Temperature Mode | Designed to support operation in colder conditions |
| Water / dust resistance | IP68 rated | Follow current care guidance for water exposure |
| Display | 1.43″ 466×466 AMOLED | Full-screen touch display |
| Battery | 530mAh | Published ~5–7 days active use and 40+ days standby; actual runtime varies |
| Heart-rate trends | ✓ Included | General wellness information, not clinical heart monitoring |
| SpO₂ / blood pressure | ✓ Wellness features | Not substitutes for validated medical devices |
AltiTrek targets the altimeter-watch shopper, while these pages cover broader rugged, GPS and wearable-health needs.
Compare other outdoor-focused models in the REXQU rugged smartwatch collection.
Browse the broader REXQU GPS smartwatch collection for different route and navigation needs.
Learn what can affect wrist oxygen readings in our SpO₂ accuracy Health Guide and browse more Health Guides Editorial Standards.
Quantity:
Choose your style:
Pick a style for each watch — mix & match:
A receipt is on its way to your email. Your AltiTrek ships within 24–48 hours.
Try AltiTrek during the return window. If it is not the right fit, request a return within 30 days in accordance with our Returns & Refund Policy.
A barometric altimeter is a genuinely useful instrument and a slightly fussy one. Here is how it works, where it drifts, and how to keep it honest.
Your altimeter reads pressure and converts it to height. Weather changes pressure too, which means a stationary watch can gain or lose a hundred feet overnight without moving. That is not a fault — it is physics. The National Weather Service explains what those pressure changes mean, and a falling barometer over a couple of hours is a real early warning of weather coming in.
The fix is simple: set the altimeter at a trailhead sign, a summit marker or any surveyed elevation before you set off. From there the relative gain and loss over a few hours is reliable, which is the number you actually care about on a climb. Recalibrate the next morning.
Satellite altitude is geometrically derived and steadier over days but noisier minute to minute; barometric altitude is smooth and responsive but drifts with weather. AltiTrek carries both. The official US government page on GPS accuracy explains why vertical accuracy is always worse than horizontal. More in our altimeter guide.
Geomagnetic compasses are thrown by car bodies, ski lift pylons and phone magnets, and they read badly when tilted. Hold the watch flat and step away from the ironmongery before you trust the bearing.
Battery capacity falls in the cold and screens dim, which is why AltiTrek is tested for it. Plan the day for it anyway — cold weather hiking covers what to expect, battery life on long days covers the rest, and the National Park Service hiking safety guidance matters more than any of it.
More from the range: GPS smartwatches · rugged smartwatches · all health smartwatches. Health statements follow our editorial and research standards.
For relative gain and loss over a few hours — the number that matters on a climb — a calibrated barometric altimeter is very good, often within a few metres. Absolute altitude is a different matter, because it is calculated from air pressure and weather moves that. Set it at a known elevation before you start and the day’s figures will be reliable; leave it uncalibrated for a week and it will drift.
Because the weather changed, not because the watch is faulty. A barometric altimeter converts air pressure into height, so an incoming low-pressure system reads as gaining altitude and a high reads as losing it. This is actually useful information in reverse: if the watch says you climbed 60 metres while it sat on a table, the pressure is dropping and weather is on the way.
AltiTrek provides altitude information for outdoor context and pairs it with barometric-pressure and compass data. It is intended as a convenient wrist tool rather than professional surveying equipment.
Yes. The product specification lists built-in GPS trajectory and track-back features for supported outdoor activities. For serious backcountry navigation, carry appropriate dedicated navigation equipment as well.
Yes. It combines altitude information, a barometer and an onboard compass in the same outdoor-focused watch.
The barometer provides atmospheric-pressure information and trends that can add environmental context during outdoor activity. Do not rely on it as your only weather-safety tool.
AltiTrek includes a dedicated Low-Temperature Mode designed to support operation in colder conditions. Battery life and sensor performance can still vary with temperature and usage.
AltiTrek is listed as IP68 rated for dust and water resistance. Follow current product-care guidance because water resistance can change with wear and not every type of water exposure is equivalent.
No. Its blood-pressure and SpO₂ functions are general wellness features. Use validated medical devices when clinical measurements matter.
The published specification lists around five to seven days of active use and 40+ days on standby. Actual battery life varies with GPS, display, sensors, temperature, notifications and other settings.
The page lists Android 7.0+ and iPhone iOS 12.0+ through the Fitbeing companion app. Compatibility can vary with phone, operating-system and app updates.
REXQU offers a 30-day return window subject to the Returns & Refund Policy.
Choose AltiTrek for altitude, barometric-pressure and compass tools alongside built-in GPS, an IP68-rated outdoor build and Low-Temperature Mode.
Get My AltiTrek →