Garmin Enduro 4

Rugged GPS smartwatch built for ultra-endurance athletes, with a lightweight design, scratch-resistant sapphire lens, built-in LED flashlight and ComfortFit fabric band for comfortable long-distance wear Comprehensive power mode enhancements provide up to 90 days of battery life in smartwatch mode (assumes all-day wear with 3 hours per day outside in 50,000 lux conditions) and 320 hours in activity mode (extended battery) (assumes continuous use for entire period in 50,000 lux conditions) There are 100+ activity profiles and advanced training and performance tools to help you perform your best on your next big adventure Grade-adjusted pace-based workout targets help ensure you exert the proper energy on uphills and downhills