The ultimate mountain sports watch built for training, racing, and beating your personal best.

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.

APEX 4 delivers industry-leading accuracy across GPS, pace, heart rate, and elevation tracking, along with the ultra-long battery life you have come to expect from COROS.

• 41hrs of GPS battery 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.
• 1.2 inch Memory-in-Pixel touch screen, 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.