-Smartwatch: Up to 50 days/65 days with solar *
-Battery Saver Watch Mode: Up to 130 days/1 year with solar*
-GPS: Up to 70hrs/80hrs with solar**

*Assumes all-day wear with 3 hours per day
outside in 50,000 lux conditions
**Assumes continuous use for entire period in
50,000 lux conditions

The Ultrafit nylon strap weighs less than six grams but is able to withstand the harsh environments and rugged demands of ultra-runners.

-Trail run VO2 max tracks your cardiovascular fitness level and adjusts based on trail conditions.
-Ultrarun activity with rest timer allows you to log time at aid stations.
-ClimbPro trail enhancements give you information on descents and flats.