Enduro 4 is built for the epic. This ultraperformance GPS smartwatch features a rugged, ultralightweight design plus a sweat-wicking ComfortFit fabric band. Power every adventure with extreme battery life enhanced by comprehensive, intuitive power modes and solar charging up to 320 hours in activity mode (extended battery). Grade-adjusted pace-based workouts help ensure athletes exert the proper energy on uphills and downhills on the trail. Smoother, more intuitive mapping experiences such as the course planner feature help users better prepare for outings with the ability to map out aid stations, checkpoints and more. Push further with advanced training tools, including enhancements to stamina data that gives insight into how endurance changes over time. ULTRAPERFORMANCE DESIGN A lightweight design with a rugged titanium bezel and sapphire lens combined with a ComfortFit fabric band ensures Enduro 4 remains light on the wrist. EXTREME BATTERY This watch provides up to 90 days of battery life, enhanced by solar charging and comprehensive power modes1 so you can have all the tools needed for your longest races or adventures. Get up to 320 hours of battery life in activity mode with solar charging2. TRAIL-READY Grade-adjusted pace-based workouts and rolling pace ensure you exert the proper energy on hills. Pack weight accounts for weight you may be carrying during trail runs and hikes, and course planner lets you map out aid stations, checkpoints and more. ADVANCED TRAINING TOOLS Access more than 100 activity profiles plus advanced training and performance tools. Enhanced stamina metrics show how your endurance is changing based on your fitness and training history. FIND YOUR WAY Multicontinent TopoActive maps are smoother and more intuitive, offering advanced navigational tools such as dynamic round-trip routing, NextFork(TM) map guide, grade-adjusted running pace and more. GARMIN EPIC This feature lets you record, review and share your performance and health data curves from a multiday activity in a seamless view and gain insights to help optimize your training and racing. NEW: 64 GB of storage means more music, more waypoints, more workouts - all stored right on the device NEW: Map Engine - Smoother, more intuitive mapping experience NEW: Power & Satellite Mode Enhancements NEW: QF ComfortFit Fabric Band NEW: Software Features that align with Fenix 9: New Map Engine - Why Garmin Perspective Mode Garmin Epic Stamina & Endurance Updates Stamina Curve Stamina Zones Endurance Contributors Rowing Enhancements (Row 2.0) Rucking Enhancements (Ruck 2.0) Grade Adjusted Rolling Pace & GAP Workouts Field Tools: Measure Height ArcheryX