All day, every day — the epix Pro - Sapphire Edition smartwatch helps you conquer every hour. This ultimate high-performance smartwatch features a stunning AMOLED display. Go longer between charges with up to weeks of battery life in smartwatch mode. Rise to any challenge with advanced training features; hill score measures your climbing performance over time, and real-time stamina updates gauge your stamina potential. The bright LED flashlight provides convenient illumination when you need it. Prioritize your mental and physical wellness with 24/7 health monitoring features such as advanced sleep tracking, HRV status and more (data presented is intended to be a close estimation of metrics tracked). Navigate with preloaded TopoActive maps and ski resort maps; download even more regions for global adventures. Gain superior positioning accuracy in any environment while optimizing battery life, thanks to multi-band and multi GNSS with SatIQ technology. Rugged by design The resilient athletic design features a bright 1.3” scratch-resistant sapphire AMOLED display, responsive touchscreen, traditional buttons and 47 mm fiber-reinforced polymer case with a titanium bezel and rear cover. Military standards The watch is tested to U.S. military standards for thermal, shock and water resistance. Long battery life Get up to 16 days in smartwatch mode or up to 30 hours in GPS mode. Built-in LED flashlight Variable light intensities and a red safety light give you greater awareness while you train in the dark and can provide convenient illumination when you need it. Strobe mode can even match your running cadence. 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. Endurance score 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. Knowledge is power Your health and training data should be easy to interpret and provide actionable insight. Begin each day with a customizable morning report, and see a daily summary of health and wellness information.