Transitioning from the workplace to training is easy with the APEX's intelligent build and design. With finish options including titanium alloy and stainless steel bezel alongside a sapphire glass face for extreme protection, you are prepared for any and every environment. To prevent injury, theres nothing more crucial than training correctly. Were able to accurately determine your overall effort, broken down into stamina level (0-100) and training effect (0-6). Exerted way too much stamina? COROS Trainer will notify you its time to rest up. Based on the effort level and training history, you will then be able to see an advised recovery window before you begin your next activity. Introducing COROS' very own, Intelligent Stride Algorithm. This unique algorithm embodies machine learning at its core to record your personal range of motion while running. This will build your very own stride model that will be used for indoor running or areas of weak GPS signal (such as tunnels).