COROS APEX 4
PURE MOUNTAIN PERFORMANCE
Shaped by years of relentless development and insight from the world’s best mountain athletes, APEX 4 delivers ultra-precise GPS, best in class battery, zero-lag mapping, a microphone and speaker, plus advanced training and recovery tools to help you take on your biggest goals.
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.

