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No
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Sapphire Glass
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Titanium Bezel
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High Strength Polymer
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Silicone
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42.6 x 42.6 x 15.8 mm
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-
1.2”
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5 ATM
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-20°C - 50°C
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-20°C - 60°C
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3rd Generation Memory-in-Pixel touch screen
-
-
Digital Dial, Back Button, Action Key
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English, German, Spanish, French, Polish, Thai, Japanese, Korean, Portuguese, Italian, Russian, Simplified Chinese, Traditional Chinese
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Endurance GPS Mode 41 hours, High GPS Mode 34 hours
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Supports L1 + L5
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-
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sync data via Bluetooth to the COROS app or directly to theCOROS server via WiFi
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new SpO2 sensor
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Yes
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-
-
-
-
-
-
-
-
-
-
-
-
N/A
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COROS APEX 4
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.