• Built-in mic to record training logs and notes, or to save quick notes mid-run.
• Up to 41 hours of GPS (All Systems Mode) and 19 days of daily use.
• An all-new aluminium bezel, while weighing just 33 grams with a nylon band.
• A vivid 1.2 inch, tapered AMOLED touchscreen keeps every detail clear in any light.
• A low-profile, 11.8mm stealth-inspired body that adds premium appeal.
• Advanced tools like Running Fitness, Race Predictor, Virtual Pacer, and personalised marathon plans help you unlock your next PR.
• Track your steps, recovery, sleep, HRV, and menstrual cycles to understand how your body's responding to training.

Hidden In Plain Sight
Black Crystal is a stealth-inspired edition of COROS PACE 4, designed for athletes who value precision and purpose over excess. An aluminium bezel adds structural integrity and a premium finish, while translucent elements bring a new feeling of depth to the design. It's the same ultralight performance you expect from PACE 4, designed with an elevated look and feel.

Details With Depth
Two-tone injection molding on the watch lugs creates a translucent multi-layered appearance, going beyond a standard polymer look and giving PACE 4 Black Crystal a sophisticated, industrial edge.

Refined Design
The silicone band features a silk-screened ripple design, heat-cured for a permanent, high definition finish.

Vapor Deposited Resilience
Physical Vapor Deposition (PVD) bonds a matte metallic finish to the bezel at a molecular level. The result is a surface that resists sweat and salt, maintaining an elevated appearance year after year.

Uncompromisingly Light
Even with added aluminium, PACE 4 Black Crystal maintains an incredibly lightweight profile at just 33 grams with a nylon band.

AMOLED At Its Best
The 2.5D touchscreen AMOLED display with a tapered edge and crystal clear visibility.

Aluminium Alloy Architecture
A 6000-series aluminium alloy bezel provides a high-integrity frame to the refined silhouette of PACE 4. It balances structural integrity with a smooth finish, ready to endure the hustle of an active life.

Big Battery Life
Efficient power, tucked into our most refined design.

• GPS Hours: 41 hrs
  
• Daily Use: 19 days

Built-In Mic
Use the microphone to save training notes or capture voice notes mid-run.

Complete Activity Details
Upload photos, videos, and Voice Pins.

COROS App - Training, Recovery And Health Hub
Track detailed training metrics like recovery time, sleep stages, HRV, and menstrual cycles to understand how your body is responding to training.

FAQ

Can PACE 4 track VO2 max and other advanced running metrics?
Yes. COROS PACE 4 calculates your VO₂ Max, Lactate Threshold, Running Fitness Level, and other advanced metrics to help you measure performance progress over time. These insights are powered by your training history, pace, and heart rate data, giving you a detailed picture of your endurance and recovery capacity.

Does PACE 4 measure heart rate reliably while running?
Absolutely. PACE 4 uses a redesigned optical heart rate sensor with larger LEDs and a more secure fit to reduce data spikes and drops during movement. Whether you’re doing intervals or long runs, you’ll get accurate and consistent heart rate readings directly from your wrist, or you can pair an external Bluetooth heart rate strap for even higher precision.

Can I train with intervals, splits, and running power on PACE 4?
Yes. The COROS app and PACE 4 make it easy to create interval workouts, structured training sessions, and running power-based plans. You can customize intervals, rest periods, and target zones—or sync detailed workouts from TrainingPeaks or Final Surge directly to your watch.

How long will PACE 4’s battery last on long training runs or race day?
PACE 4 delivers up to 41 hours of continuous GPS tracking in All-Systems mode, enough for your longest training runs or marathons. For daily use—including workouts, notifications, and sleep tracking—you’ll get up to 19 days on a single charge.

Is PACE 4’s screen bright and easy to read outdoors?
Yes. The 1.2" AMOLED touchscreen offers vivid color, crisp definition, and auto-adjusting brightness that adapts instantly to sunlight or shade. Whether you’re on a pre-dawn run or a bright track session, the PACE 4 display stays clear and easy to read from any angle.

Can I follow routes and get turn-by-turn directions with PACE 4?
Yes. PACE 4 includes breadcrumb navigation and other route related features, but does not support full mapping. You can create routes in the COROS app or sync from Strava, RideWithGPS, or Wikiloc for seamless route guidance on your wrist.

Will PACE 4 alert me if I go off course?
Yes. PACE 4 gives you real-time off-course alerts so you’ll know immediately if you stray from your planned route. Combined with breadcrumb navigation and precise GPS tracking, it helps you stay confident during long runs and races.

Can I listen to music with PACE 4?
Yes, PACE 4 includes onboard music storage for MP3 files, and you can control your phone's music or podcast playback directly from the watch. At this time, we do not directly support an integration with Spotify or Apple Music.

Can PACE 4 track my sleep?
Yes. PACE 4 tracks sleep stages (light, deep, REM) and measures heart rate variability (HRV) to help you understand recovery quality. You’ll see daily summaries and long-term trends in the COROS app, giving you actionable insight into how your body responds to training load and rest.

Is PACE 4 waterproof?
Yes. PACE 4 is rated to 5 ATM (50 meters), making it safe for swimming, rain, or sweat-heavy sessions. You can record pool and open-water swims, shower with it, or train in all weather without worry.