Coros - APEX 4 GPS Outdoor Watch White 42mm - 2026

Coros - APEX 4 GPS Outdoor Watch White 42mm - 2026

The Ultimate Mountain Sports Watch Built for Training, Racing and Beating your Personal Best

The APEX 4 is an industry-leader for accuracy across GPS, pace, heart rate and elevation tracking, along with an ultra-long battery life that is now a standard for COROS. Designed specifically for pure mountain performance, this piece of kit is perfect for those who find themselves at high peaks and dangerous heights!

Why Choose the APEX 4 Watch?

Ultra-Precise GPS Tracking

Landscape maps with layers, street and trail names means that you have all the information you need, even without cell service. You can rely on the navigation to be accurate and precisely tracked, even in dense forests, steep couloirs and sheer alpine walls.

Battery That Doesn't Die When You Need it the Most

A battery life that gets you from the center of London all the way to Birmingham on foot with 24/7 GPS use! That's 60 hours of constant navigation! With an estimated 34 days of daily use with one charge!

Tools for the Ascent

An accurate, zero-lag mapping and a life-saving Back to Start so that you always know where you're heading and where you've been.

Long Run Ready

From your first trail run to your 100-mile win, APEX 4 provides on-device global maps, 3D terrain views, real-time Effort Pace, route planning and fitness metrics designed to help you track your training.

Effort Pace

Knowing how hard to push when you're not on flat ground can be challenging, that's why COROS' unique Effort Pace tells you your equivalent pace on flat terrain! 

Adventure Logs

Adventure Journal logs Voice Pins, terrain photos and key details from your efforts so you can easily review what you saw, said and did! Plan better routes and adjust your strategy!

Technical Details

• 65hrs of GPS battery (46mm) or 41hrs (42mm), enough to get you through your longest days.
• Our most powerful mapping with free Global Maps, street and trail names, turn-by-turn navigation, and POI's
• Precision dual-frequency GPS with vertical algorithms built for alpine terrain and sheer walls.
• 1.3 inch Memory-in-Pixel touch screen (46mm) or 1.2 inch (42mm), with sharp contrast and easy readability in sun, snow, or shadows.
• A titanium bezel and sapphire glass deliver a lightweight feel with alpine-grade durability.
• Built-in speaker and mic for pace alerts, Voice Pins, and hands-free calls.
• Track and manage your recovery, HRV, sleep, SpO2, and training load for a 360 degree view of your training.
• Study every step of your training and racing with 3D Flyovers and Adventure Journaling.

Where Endurance Meets Altitude

Mountain sports have unique demands. The APEX 4 has been intricately designed to meet them all

About COROS

COROS makes smart watches and other types of performance sports technology to help athletes optimise their training and performance. Its products combine high-grade hardware with innovative technology to provide endurance athletes with reliable equipment which performs in the world’s most extreme environments. This advanced technology is combined with an efficient and intuitive user experience.

At MyTriathlon, we’ve taken our time (no pun intended) to pick out a manufacturer of smart watches we felt we could truly trust. So now that we’re offering models from the COROS range, we’re happy for you to ask us any questions to guide you to the right model. Call us on 0207 183 7245, or get in touch via Webchat.