Garmin Fenix 7S Pro Sapphire Solar Edition Smartwatch with Band is the ultimate high-performance smartwatch that helps you conquer every hour. It features advanced fitness technology, an LED flashlight, 24/7 health and wellness monitoring. Long battery life with solar charging get up to 14 days in smartwatch mode with solar charging in 3 hours of direct sunlight (50, 000 lux) per day and up to 46 hours in gps mode with solar charging (assumes continuous use for entire period in 50, 000 lux conditions). Built-in led flashlight variable light intensities and a red safety light give you greater awareness while you train in the dark, providing convenient illumination when you need it. The strobe mode can even match your running cadence. Endurance Score: this feature measures your ability to sustain prolonged efforts and combines training data from all your athletic pursuits to help you understand how training impacts your overall endurance. This dynamic measurement uses your vo2 max, short-term/long-term training loads and other factors to gauge your fitness progress beyond just vo2 max. Hill Score: this feature measures your capability for running uphill and evaluates your progress over time based on your vo2 max and training history. It measures your running strength on steep ascents and running endurance on long ascents and provides a score based on your performance over time. Comes in carbon gray dlc titanium/black color with 42 mm case size.