Garmin Fenix 7X Pro Solar Smartwatch, Glass, Black Strap, Slate Grey The fēnix® 7 Pro series is the next-generation multisport GPS smartwatch, designed to go all day, every day. Dare to push yourself to the limit with advanced training features, 24/7 health and wellness monitoring and an LED flashlight. Get up to 37 days of battery life in smartwatch mode or up to 139 days of GPS in Expedition mode with 3 hours of direct sunlight (50,000 lux) per day on the fēnix 7X Pro Sapphire Solar editions, which feature a scratch-resistant Power Sapphire™ solar charging lens.