COROSÂ APEX 4
Take on your biggest goals with the COROS APEX 4. It tracks your vert in real time, delivers precise GPS and zero-lag mapping, and relies on a display that's visible even in snow, sun or at speed.









- APEX 4 delivers industry-leading accuracy across GPS, pace, heart rate and elevation tracking, along with the long battery life expected from COROS
- Battery life is long enough to last 100 miles around Mont Blanc or linking up the Grand Traverse: 42 MM: 35 hrs.; 46 MM: 54 hrs. (all systems GPS)
- GPS precision holds true in dense forests, steep couloirs and sheer alpine walls
- Most accurate vertical GPS algorithm from COROS for challenging environments
- Dual-range barometer is elevation calibrated for rapid weather changes and steep, technical terrain
- Everything you need to log every climb with precision: automatic route detection, vertical GPS tuned for climbing, 5 specialized climbing modes and carabiner for crack climbs
- Fast mapping experience available across topographic, satellite, hydromaps and street layers
- 3rd-generation, always-on Memory-in-Pixel (MIP) screen display delivers deeper colors and stays sharp in full sun, deep snow and shadows
- Lightweight titanium with sapphire glass, engineered for performance
- Grade 5 titanium bezel with reinforced lugs
- Weight: 42 MM: 56 g; 46 MM 65 g
- Track sleep phases; monitor HRV, SpO2 and resting heart rate trends; monitor your daily stress levels; and use recovery timer to ensure your readiness is on pace with training
- Like every COROS product, APEX 4 adapts to you; together, your APEX and the COROS app learn how you train and get better with every effort
- Get audible alerts for pace, time, distance and turns; save voice notes mid-effort and take hands-free calls when you need to phone a friend
- Adventure Journal logs voice notes, terrain photos and key details so you can review what you saw, said and did
- This allows you to plan better lines, adjust strategy and have better recon for your next project
- Compatible with POD, POD 2, heart rate monitor (including 3rd party monitors), gym equipment, power meters, bike trainer and bike speed/cadence sensors
- Compatible with camera controls with GoPro, DJI and Insta360
Imported.
View all COROS GPS Sports WatchesBest Use | Trail Running |
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Average Battery Life | 42 MM: Regular use with sleep, daily stress and daily HR measurements: 15 days; GPS mode: 35 hrs. 46 MM: Regular use with sleep, daily stress and daily HR measurements: 24 days; GPS mode: 54 hrs. |
Battery Type | Lithium |
Display Size | 42 MM: 1.2 inches 46 MM: 1.3 inches |
Illumination | Luminous Face |
Altimeter | Pressure-based |
Compass | Yes |
GPS/Satellite Detectable | Yes |
HRM Included/Integrated | Yes |
Heart Rate Sensor Type | Wrist-based |
Average Heart Rate | Yes |
Pulse Oximeter | Yes |
Heart Rate Target Zone(s) | Yes |
Recovery Advising | Yes |
Tracks Steps | Yes |
Pedometer Type | Digital 3-axis Accelerometer |
Pace Alert | Yes |
Interval Training | Yes |
Tracks Calories Burned | Yes |
Water-Resistant Depth | 50 meters |
Pool Lap Recognition | Yes |
Sleep Tracking | Yes |
Alarm | Yes |
Time Display | Yes |
Stopwatch | Yes |
Visual Map Display | Yes |
Preloaded Map | Road / Topo |
Programmable Routes | Yes |
Number of Routes | 10 |
Customization | Data Fields Watch Faces |
Smart Device Notifications | Yes |
Data Exchange | Bluetooth |
Compatible Fitness Accessories | Heart Rate Monitor Power Meter Foot Pod Cadence Sensor |
Gender | Unisex |
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