The Coros Apex 4 Mountain Sports Watch is built for training, racing, and beating your personal best.
Shaped by years of development and insight from mountain athletes, the Apex 4 delivers ultra-precise GPS, long battery life, zero-lag mapping, a microphone and speaker, plus advanced training and recovery tools to help you take on your biggest goals. The watch features alpine-grade engineering with lightweight titanium, reinforced lugs, and sapphire glass. The 3rd generation always-on MIP display delivers deeper colors and stays sharp in full sun, deep snow, and shadows.
The Apex 4 and the Coros app form a connected training system. Training Status indicates if you are building, maintaining, or overreaching, while Training Load tracks work across runs, rides, climbs, and touring. Base Fitness shows long-term aerobic fitness. The recovery and readiness hub tracks total sleep time, sleep phases, sleep quality, and naps, alongside overnight HRV, daily stress levels, and a recovery timer to help balance rest and effort.
The watch provides on-device global maps, 3D terrain views, real-time Effort Pace, route planning, and fitness metrics. Real-time map rendering delivers global landscape and topo maps with turn-by-turn guidance, trail names, and points of interest. Integrated voice tools allow for hands-free calls, recording Voice Pins, and hearing activity alerts out loud. The device syncs with apps like Strava and Apple Health, provides call and text updates, and offers camera control.
Features:
- Industry-leading accuracy across GPS, pace, heart rate, and elevation tracking
- Dual-range barometer calibrated for rapid weather changes and technical terrain
- 30x faster map and graphic rendering speeds
- Vertical GPS algorithms for challenging environments
- Endurance Satellite Mode
- Adventure Journal logs Voice Pins, terrain photos, and key details
- Up to 65 hours of All Systems GPS (46mm model) or 41 hours (42mm model)