For an active endurance athlete. You want to improve your performance between training routines - by planning, monitoring and analysing your training. Do all this and much more with the RS400, the complete system for runners. The RS400 has one of the largest displays in the industry and a fully user-configurable exercise view with countless combinations. The impressive design and comfortable wrist top mounting make it a pleasure to wear also in evryday life. Includes Polar ProTrainer 5 - Professional training software. A sophisticated software designed to provide you with deep understanding of your training and functions as a stand-alone Windows software in a PC. Use the software to plan your training sessions in advance, define your training zones for each training phase, and upload the settings to your Polar product. After your training, you can analyze the results closely with versatile graphs that you can customize according to your unique needs. A customizable calendar provides a complete training log where each exercise file automatically creates a diary entry with all your training data. Use different reports for long-term development follow-up.