Coros APEX 4 GPS

The ultimate mountain watch, designed for training, racing and your personal bests.

Features
• Up to 65 hours (46 mm) or 41 hours (42 mm) of GPS battery life to keep you going through your longest days
• Our most powerful mapping with free global maps, street and trail names, turn-by-turn navigation and points of interest
• A high-precision dual-frequency GPS with vertical algorithms, engineered for alpine terrain and steep faces
• A transflective (Memory-in-Pixel) touchscreen display, 1.3 inches (46 mm) or 1.2 inches (42 mm), with sharp contrast and easy readability in sunlight, snow, or shade
• A titanium bezel and sapphire crystal offering a lightweight feel and mountain-ready durability
• Built-in speaker and microphone for pace alerts, voice notes, and hands-free calls
• Track and manage your recovery, HRV, sleep, SpO2 and training load for a complete view of your training
• Analyze every stage of your training and races with 3D flyovers and the Adventure Log
• Alpine-grade technology: lightweight titanium. Reinforced strap lugs. Sapphire touchscreen display
• Accurate data, anytime: Dual-frequency GPS, dual-range barometer, vertical GPS algorithms
• 30x faster map and chart drawing speed
• The COROS app – where your adventure lives: Plan and track your routes while reliving every memory, every stat, and every summit, all in one place
• Speaker + microphone: Get audio alerts during your activities, record voice notes and take hands-free calls
• Environment and weather: Check real-time weather, atmospheric pressure, wind and much more
• Memory-in-pixel advantage: A transflective (MIP) always-on display that’s easy to read in sunlight, snow and shade
• Additional features: Checkpoint, Back to Start, Off-course alert, touch navigation on the map, safety alerts
• Training features: Effort Pace (a custom metric that represents your true running effort), EvoLab (recovery, fatigue, training load, race predictor, VO2 max, threshold zones and more metrics), Activity alerts (for cadence, distance, pace, heart rate, power and more), Basic/advanced interval training, Pre-planned workouts, Training plans, Running level, Resting HR, Underwater heart rate, Remote camera control (supports select GoPro and Insta360 cameras), Virtual Pacer, Virtual run, Running form test (requires Coros POD/POD 2), Altitude mode (regular SpO2 and high-altitude fitness assessment), Touch scroll (swipe to scroll through data pages during training), Screen sharing/Extender
• Everyday functions: Daily stress, Health overview, Message/call alerts (during everyday use and during training), Sleep (with cycle tracking), Alarm, Timer, Stopwatch, Daily alerts (including active calories, exercise time, storm and other alerts), Firmware update compatible (with Wi-Fi and the Coros app), Find my phone, Find my watch, Always-on mode, HRV, Music (offline music playback with compatible Bluetooth headphones)
• Compatible apps: Nike Run Club, Komoot, TrainingPeaks, Strava, Relive, adidas Running, Apple Health, Stryd, Final Surge, Runalyze, Running Quotient, Decathlon
• Software languages: English, Simplified Chinese, Traditional Chinese, German, Spanish, French, Polish, Thai, Japanese, Korean, Portuguese, Italian, Russian, Vietnamese

Materials
• Screen: Sapphire crystal
• Frame: Titanium alloy
• Shell: Fiber-reinforced polymer
• Strap: Silicone/Nylon

Specifications
• Dimensions: 42.6 x 42.6 x 14 mm (height does not include the optical heart rate sensor)
• Weight: 56 g with silicone strap, 44 g with nylon strap
Total Leatt® protection score: 10 points.
• Screen resolution: 240x240
• Screen type: 3rd-generation Memory-in-Pixel touchscreen
• Watch strap: Width – 22 mm, Size (Nylon) – 135 mm–205 mm, Size (Silicone) – 135 mm–205 mm, Attachment type – Quick release
• Buttons and dial: Dial, Back button, Action button
• Connectivity: Phone–Bluetooth, Accessories–Bluetooth, Data sync–Wi-Fi/Coros app
• Water resistance: 5 ATM (Suitable for surface water activities, but not for diving)
• Operating temperature: -4°F to 122°F (-20°C to 50°C)
• Storage temperature: -4°F to 140°F (-20°C to 60°C)
• Daily use & sleep tracking: 15 days (With sleep tracking, daily stress, and continuous heart rate monitoring)
• Estimated charging time: Under 2 hours
• Internal memory: 32 GB
• Activity memory: 1200 hours (estimates based on outdoor activities)
• Location: Satellite systems - GPS, GLONASS, Galileo, Beidou, QZSS / GNSS chip - All satellites
• Navigation: Map layer – Landscape (with street names) (downloadable worldwide maps), Topo (downloadable regional maps)
• Data measurement: Sensors–Speaker for taking hands-free calls or playing activity alerts, Dual microphone with noise reduction (For recording voice notes and using voice commands), Optical heart rate sensor (May not work over tattoos), Barometric altimeter, Accelerometer, Gyroscope, 3D Compass, Thermometer [Measures body temperature during training (With compatible accessory)], Optical pulse oximeter, Electrocardiogram sensor
Battery
• Endurance mode (GPS, GLONASS, Galileo, Beidou, QZSS): 41 hours, 11 hours (with music)
• All Systems Precision Mode (GPS, GLONASS, Galileo, Beidou, QZSS): 34 hours, 10 hours (with music)
• Max Dual Frequency mode (GPS, GLONASS, Galileo, Beidou, QZSS): 26 hours, 9 hours (With music)

What’s in the box
• USB-C cable not included

SHIPPING, RETURNS & PURCHASES