Ultimate high-performance smartwatch features a 1.3” always-on, stunning AMOLED display and a scratch-resistant sapphire lens with a titanium bezel.Built-in LED flashlight with variable intensities and strobe modes gives you greater awareness while you train at night and provides convenient illumination when you need it.The new hill score feature measures your running strength and endurance during ascents and gauges your progress over time.The new endurance score feature combines training data from all your athletic pursuits to help you understand how training impacts your overall endurance