COROS APEX 4 GPS Watch
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The ultimate mountain sports watch built for training, racing, and beating your personal best.
- 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.
Description
COROS APEX 4 delivers incredible battery life, precision GPS, and a lightning-fast mapping experience, all in a lightweight, premium, and durable build. The perfect combination for mountain athletes looking to train, race, and perform their best.

● Alpine-Grade Design – Lightweight Grade 5 titanium with reinforced lugs, sapphire glass, and a crystal-clear Memory-In-Pixel display designed to perform in sun, snow, and shadows.
● Ultra-Precise Navigation – Enhanced Vertical GPS Algorithms, dual-frequency tracking, and a dual-range barometer deliver the highest accuracy in forests, couloirs, and alpine walls.
● Best-in-Class Battery – Up to 65 hours in All-Systems GPS (46mm) or 41 hours (42mm) — enough to circle Mont Blanc or link the Grand Traverse without charging.
● Zero-Lag Maps – Global topographic and landscape maps with street names render instantly with turn-by-turn navigation, POIs, and street and trail names.
● Sport-Specific Software – Dedicated modes and tools for trail running, climbing, and ski touring, plus advanced training, sleep, recovery, and readiness insights.
● Built-In Voice and Audio Tools – Audible pace and turn alerts, voice notes, and hands-free calling.
● Multiple Sizes – Options for every wrist with 46mm and 42mm case sizes to suit every preference.
Purpose-Built for Mountain Sports
Whether it's chasing a first trail race or linking up multi-day alpine ridge projects, APEX 4 brings precision tools for every goal in the mountains:
● Trail Running – On-device global maps, 3D terrain views in the COROS app, and Effort Pace help you train and race smarter.
● Climbing – Automatic route detection, five climbing modes, a carabiner, and fall detection bring precision to every send.
● Ski Touring – Real-time vertical tracking, topo maps, and live weather data (when connected to your phone) keep you informed on every ascent and descent.
● Recovery & Readiness – Track HRV, SpO2, sleep, and training load to give you a 360-degree view of your training and recovery.
● Explore More – With sport modes for hiking, mountain biking, cycling, swimming, and over 30 additional activity modes, COROS APEX 4 adapts to every sport.