Smartwatch: Up to 24 days/54 days with solar* Battery Saver Watch Mode: Up to 56 days/Unlimited with solar* GPS: Up to 30 hours/38 hours with solar** Max Battery GPS Mode: Up to 70 hours/145 hours with solar** Expedition GPS Activity: Up to 28 days/68 days with solar*
*Solar charging, assuming all-day wear with 3 hours per day outside in 50,000 lux conditions **Solar charging, assuming use in 50,000 lux conditions
