Coros Apex 4
A trail and outdoor, running GPS watch by Coros, released in 2025.
Black
Watch profile
- GPS
- 34 h
- maps
- yes
- screen
- MIP (transflective)
- weight
- 56 g
- water rating
- 5 ATM
Spec sheet
Every value is read on the brand’s page; hover it to see its source and date.
Battery
Will it last your ultra, your week?
- Smartwatch mode
- 15 days
- GPS battery life
- 34 h
- Multi-band GPS battery life
- 26 h
Navigation
For trail, ultra and the mountains
- Onboard maps
- yes
- Course guidance
- yes
- Multi-band GNSS
- yes
- Back to start
- yes
Screen and size
Readability, comfort on the wrist, swimming
- Screen type
- MIP (transflective)
- Screen size
- 1.2″
- Resolution
- 240 x 240 pixels
- Touchscreen
- yes
- Buttons
- 3
- Glass
- sapphire
- Case
- 42.6 mm
- Thickness
- 14 mm
- Weight
- 56 g
- Case material
- polymer
- Bezel
- titanium
- Water rating
- 5 ATM
Sensors
How precise the measures are
- Wrist heart rate
- yes
- Pulse oximeter (SpO2)
- yes
- Barometric altimeter
- yes
- Compass
- yes
Training
For the runner, the triathlete, Hyrox
- Load and recovery
- yes
- Multisport profiles
- yes
- Triathlon mode
- yes
- Strength and HIIT
- yes
- Structured workouts
- yes
- Training plans
- yes
Everyday
Living with it, outside workouts
- Onboard music
- yes
- Wi-Fi
- yes
Spec sheets read at: coros.com
Who is it for?
The sports the brand announces, and the features that go with them.
Trail running
- Onboard maps: yes
- Multi-band GNSS: yes
- Barometric altimeter: yes
- GPS battery life: 34 h
Running
- Load and recovery: yes
- Structured workouts: yes
- Training plans: yes
Triathlon
- Triathlon mode: yes
- Multisport profiles: yes
- Water rating: 5 ATM
Comparable watches
The closest on battery life, screen, weight, water rating and list price.
Frequently asked questions
How long does the Apex 4’s battery last with GPS?
Up to 34 h with GPS according to Coros, and up to 26 h in multi-band GPS.
Is the Apex 4 waterproof?
Coros rates it 5 ATM.
Does the Apex 4 have maps?
Yes: Coros announces onboard maps.
Which sizes does the Apex 4 come in?
In a 42.6 mm, 46.2 mm case according to Coros.