Key Benefits

• Dual-frequency GPS for ultra-precise navigation.

• Up to 65-hour battery life in GPS mode.

• Titanium body and sapphire glass durability.

• Zero-lag global mapping with turn-by-turn guidance.

• Sport-specific modes for trail, climb, and ski.

Made for trail running, alpine climbing, ski touring, or any pursuit where endurance meets elevation, the COROS APEX 4 is a high-performance GPS adventure watch built for mountain athletes who want to train hard and go far, fast. Crafted from Grade 5 titanium with sapphire glass and a crystal-clear Memory-In-Pixel display, it’s engineered to perform in extreme conditions — from sun and snow to altitude and impact.

Equipped with dual-frequency satellite tracking, enhanced Vertical GPS algorithms, and a dual-range barometer, the APEX 4 delivers ultra-precise navigation in dense forests, couloirs, and alpine walls. Its next-generation processor provides zero-lag global mapping, displaying detailed topographic and landscape maps with turn-by-turn navigation and named trails.

With up to 65 hours of battery life in Endurance GPS mode(46mm version) and up to 24 days with basic daily use (including sleep, daily stress, and daily HR measurements), the APEX 4 is ready for multi-day missions. Dedicated sport modes for trail running, climbing, and ski touring, alongside advanced training, sleep, and recovery insights, give a full picture of performance.

Lightweight yet exceptionally durable, it’s precision-engineered for endurance athletes who demand accuracy, reliability, and performance in every environment.

COROS is a performance sports technology brand built for athletes who push limits. Inspired by the outdoors and driven by endurance, COROS designs high-grade gear tested in the world’s most extreme conditions. Every product blends advanced engineering with intuitive design to support serious training and exploration. Created by athletes, for athletes—COROS is made to perform when it matters most.

With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.

Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.

For full setup instructions, please follow the user manual included with the product.

GENERAL SPECIFICATIONS:

APEX 4 (46MM)

Dimensions: 46.2 x 46.2 x 15.5 mm
Body Weight: 44g
Weight with Silicone Band: 64g
Weight with Nylon Band: 52g

Battery:
Endurance GPS Mode: 65 hours
High GPS Mode: 53 hours
Max GPS Mode: 41 hours
Daily Use: 24 days (with Sleep, Daily Stress, and Daily HR Measurements)
Charging Time: About 1.5 hours (15℃ ~ 45℃ / 59°F to 113°F)

Band:
Width: 24mm
Wrist Size Compatibility: Silicone: 140–215 mm / Nylon: 140–215 mm
Connection: Quick Release

Display:
Screen Size: 1.3 inches
Resolution: 260 x 260 pixels
Screen Type: 3rd Generation Memory-in-Pixel Touch Screen