COROS 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.




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- 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 Watches| Best Use | Trail Running |
|---|---|
| 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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made the switch
I had an Apple watch for years upon years. It has some great features but feels like a “toy.” The Apex4 does not have some capabilities as the Apple Watch, like the ability to text. Which I could care less about. What I do care about is battery life and gps for hikes. This thing has done and outstanding job, especially when you link it to Strava or create your own path with the Coros app. The MIP screen does have some “dullness” compared to the Apple Watch or Garmin. But I think it works perfectly for conserving battery life and it’s very easy to read in the sun. No need for the palm shade. This watch has exceeded all my expectations. Will continue to test and update.
Too bulky for small wrists
I love my Apex 1 and was super excited to upgrade Apex to the 4 but unfortunately I had to return it because it’s too bulky for my small wrists. The depth and slightly larger watch face were just too much. Additionally, I wish the watch would have remained all titanium and not switched to a fiber reinforced polymer cover material. The polymer doesn’t look as good as the all titanium body in my opinion. I still love Coros and will continue to use their products, this new Apex 4 just isn’t for me.




