Coros Apex 4 46mm watch 2026

The ultimate mountain sports watch built for training

Shaped by years of relentless development and insight from the world’s best mountain athletes, APEX 4 delivers ultra-precise GPS, best in class battery, zero-lag mapping, a microphone and speaker, plus advanced training and recovery tools to help you take on your biggest goals.

Razor-sharp accuracy, without limits
APEX 4 delivers industry-leading accuracy across GPS, pace, heart rate, and elevation tracking, along with the ultra-long battery life you have come to expect from COROS.

More detailed maps
Two map layers with 15m zoom plus trail and street names keep you oriented on trails, in the city, or on the slopes.

Elevation
Calibrated for rapid weather changes and steep, technical terrain.

GPS
Precision that holds true in dense forests, steep couloirs, and sheer alpine walls.

Battery
Long enough to last 100 miles around Mont Blanc, or linking up the Grand Traverse.

Microphone
Record Voice Pins to capture beta on the wall or save a note-to-self during your long run to help be better prepared next time.

In plain sight
APEX 4's 3rd generation always-on MIP display delivers deeper colors, stays sharp in full sun, deep snow, and shadows.

Speaker
Take hands-free calls and listen to your activity alerts out loud.

Training Status
Training Status tells you if you’re building, maintaining, or overreaching—so you stay in control across every season. Training Load tracks how much work you’ve put in across runs, rides, climbs, and touring.Base Fitness shows your lon

Training Load
Training Load tracks how much work you’ve put in across runs, rides, climbs, and touring.

Base Fitness
Training Status tells you if you’re building, maintaining, or overreaching—so you stay in control across every season. Training Load tracks how much work you’ve put in across runs, rides, climbs, and touring.Base Fitness shows your long-term aerobic fitness.

Sleep
Track your total sleep time, sleep phases, sleep quality, and naps.

HRV
Check your overnight HRV to see how your body is responding to training and stress.

Daily stress
Track your body’s stress levels with a simple 1–100 score

Recovery timer
Recovery Timer shows when your body is ready for easy or hard training, helping you balance rest and effort.

Your adventure journal
Adventure Journal logs Voice Pins, terrain photos, and key details from your effort so you can review what you saw, said, and did. Plan better lines, adjust your strategy, and leverage more recon for your next big goal.

Longer battery
APEX 4 pairs an always-on, 3rd-gen MIP display with deeper colors and higher contrast—built to stay clear in sun, snow, or shadows. With up to 65 hours of All Systems GPS (46mm) or 41 hours (42mm), you'll have full confidence in your watch whether it's linking up the Grand Traverse, or the full loop around Mont Blanc.

Vertical gps tracking
With our most accurate vertical GPS algorithm yet, dual-frequency tracking, a precision heart rate sensor, and a dual-range barometer for sharper elevation and weather data, you won't have to worry about any missing meters when your activity is finished.

Fast mapping
APEX 4’s real-time map engine renders instantly—delivering global landscape and topo maps with turn-by-turn guidance, trail names, and POIs.

Built-in voice tools
Take hands-free calls, record Voice Pins, or have your activity alerts played out-loud so you never have to break your attention.

Trail Running

• Effort pace: Effort Pace tells you your equivalent pace on flat terrain so you know when to push, and when to dial back.
• Global maps: Landscape and Topo map layers with street and trail names give you the information you need when you need it, even without cell service.
• Navigation: Turn-by-Turn directions, street names, POI's and Back to Start make sure you always know where you're headed, and where you've been.
• Running fitness: Find out Race Prediction times, and what zones to train in to improve specific abilities whether you're prepping for an ultra, or your next 5k all-out effort.

Climbing

• Voice pins: Save beta mid-route with just your voice so you can remember every crux, move, and emotion you felt.
• Four climbing modes: Switch between bouldering, single-pitch, multi- pitch, and mountain climb to have data that fits your exact needs.

Skiing

• Track the turns you earned: Track your vertical in real time, stay oriented on remote descents with advanced map layers, and rely on a display that is always visible. No matter the snow, sun, or your speed.
• Topo Maps: Read the mountain instantly with contour lines and terrain details made for ski travel.
• Weather: Get live conditions so you can make smarter calls on every skin up and descent.
• Precision Metrics: Measure vertical, elevation gain, and heart rate with accuracy you can trust.
• Navigation: Stay on course by syncing a GPX track to your watch, and be alerted when you've gone off- course, even in whiteout conditions.

Tech spec

Size and Weight

• Dimensions: 46.2 x 46.2 x 13.7mm (Height does not include the optical heart rate sensor)
• Producer's weight: 64g (with silicone band)

Display

• Display Size: 3,3 cm
• Display Resolution: 260 x 260 pixels
• Display Type: 3rd Generation Memory-in-Pixel touch screen

Materials

• Screen Material: Sapphire Glass
• Bezel Material: Grade 5 Titanium Alloy
• Cover Material: Fiber Reinforced Polymer
• Band Material: Silicone / Nylon

Watch Band

• Width: 24mm
• Size Nylon: 140mm - 215mm
• Size Silicone: 140mm - 215mm
• Installation Type: Quick Release

Design

• Buttons & Dials: Digital Dial, Back Button, Action Button (for shortcuts to your maps, Pins, and more)

Connectivity

• Phone: Bluetooth
• Accessories: Bluetooth
• Data Sync: Wi-Fi / COROS App

Battery

• Endurance All Systems: 65 hours
• Charging Time: Less Than 2 Hours

Included: Coros Apex 4, Charging base, Documentation

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