There are 7 days in a week, and thefēnix® 7collection is built to last for all of them. Featuring a scratch-resistant Power Sapphire™ solar charging lens, it has the battery life to sustain your athletic and outdoor challenges. Use trusted button controls or the newtouchscreen interfaceto access performance insights and metrics that help you manage your exertion and build stamina. Optimise recovery with 24/7 health and wellness monitoring of heart rate, respiration, stress, sleep and more.