The Polar M450 is a high-performance cycling computer designed for serious cyclists who want to track their progress and improve their performance. With GPS and heart rate monitoring capabilities, the M450 provides accurate data on distance, speed, and heart rate, allowing cyclists to analyze their rides and make adjustments to their training regimen. The M450 also features a customizable display, so users can choose the data they want to see during their ride. To protect the M450's screen from scratches and damage, our website offers a range of screen protectors specifically designed for this device.