The COROS PACE 4 helps you train smarter and run faster. An ultralight design and vivid AMOLED touchscreen keeps every detail clear, even in bright light. It tracks steps, sleep, HRV, and menstrual cycles to show how the body responds to training. Advanced tools, such as race predictor and virtual pacer, help unlock your next PR. Also featured is a built-in mic to record training logs and quick notes while running. With up to 41 hours of GPS battery life, your training isn’t tied to a charger.