Official manufacturer render.
COROS
APEX 4 46mm
Watch2025Released
- 1.3-inch Memory-in-Pixel (3rd gen MIP touch)
- All-satellite dual-frequency GNSS
- 51 g
- From $479
Physical specifications
1.3"
Display size
51 g (with nylon band)
Case weight
46.2 mm
Case height
46.2 mm
Case width
13.7 mm
Case thickness
Release and pricing
- Announced
- October 15, 2025
- Released
- October 15, 2025
- Starting price
- $479
- Market
- US
Display
- Display size
- 1.3"
- Display technology
- Memory-in-Pixel (3rd gen MIP touch)
- Resolution
- 260 × 260
- Protection
- Sapphire glass
Performance
- Chipset
- All-satellite dual-frequency GNSS
- Storage
- 32 GB
- Expandable storage
- No
Battery & charging
- Charging standard
- Magnetic charging (<2 h). Daily use 24 days; all-systems GPS 53 h; dual-frequency GPS 41 h; Endurance all-systems 65 h (extended mode — not everyday life); music modes shorter
- Battery type
- Lithium-ion
Build & durability
- Frame
- Fiber-reinforced polymer; Grade 5 titanium bezel
- Back
- Fiber-reinforced polymer
- Front
- Sapphire glass
- Ingress protection
- 5 ATM
Connectivity
- Cellular
- GPS / GLONASS / Galileo / BeiDou / QZSS (dual-frequency), Downloadable global Landscape / Topo maps, Speaker + microphone, ECG sensor
- Wi‑Fi
- Wi-Fi / COROS App
- Bluetooth
- Bluetooth
Sizometry Analysis
Everyday usability
Estimated from the watch’s size, weight, battery, display, and intended wearing conditions.
Wrist comfort
Substantial on the wristIts large footprint and mass make it a substantial presence on the wrist.
Sleep comfort
NoticeableUsers sensitive to wrist pressure may prefer a smaller and lighter model overnight.
Battery usability
Data unavailableAvailable battery information is insufficient for a reliable daily-use assessment.
Screen and controls
Easy to useDetailed brightness information is unavailable, so outdoor visibility cannot be fully assessed.
Workout usability
Well suitedStrong water resistance and GPS availability improve its usefulness for outdoor training.
Models and configurations
- Storage
- 32 GB
- Connectivity
- GPS / GLONASS / Galileo / BeiDou / QZSS (dual-frequency)Downloadable global Landscape / Topo mapsSpeaker + microphoneECG sensor
