This is the ultimate mountain sports watch, built for training, racing, and beating your personal best. Mountain sports have unique demands, and the COROS APEX 4 is designed to provide everything you need to succeed, from your first trail race to your next big summit. 

Alpine-Grade Engineering: Lightweight titanium, reinforced lugs, sapphire glass

Zero-Lag Mapping: Get on-device global maps and 3D terrain views, with real-time navigation that never slows down.

Climbing Precision: Features specialized Vertical GPS and four dedicated climbing modes to log every ascent with precision.

Real-Time Data: Track your vertical in real time, use Effort Pace for training, and rely on fitness metrics and advanced map layers to stay oriented.

Always Ready: Accurate data, incredible battery life, and a display that's always visible set you up for success, no matter the snow, sun, or your speed.

What's New in the Apex 4? 

• More accurate GPS
• Durable built: titanium bezel and scratch-free sapphire glass display
• More detailed maps – both on street and trail 
• Dual-range barometer calibrated for rapid elevation and terrain changes 
• 30x faster mapping graphic rendering speed 
• Exceptional battery life: last 100 miles (up to 41hrs) or 15 days of daily use
• Built-in microphone and speaker for hands-free calls and voice notes
• Always-on MIP display - better colours and sharp

Specifications

• Dimensions: 42.6 x 42.6 x 14mm
• Weight: 56g (with silicone band) or 44g (with nylon band) 
• Display: 1.2 inches
• Display Resolution: 240 x 240 pixels
• Watch Band: 22mm
• Water Resistance: 5 ATM
• Battery Life: up to 41 hours on Endurance All Systems mode / 15 days on Daily Use mode