The S725X is a proven and trusted heart rate based training tool for the most demanding multisport training and elite-level competitive cycling. Tough and powerful, it provides the ultimate solution for racing and optimizes every aspect of every one of your training sessions.

Product Components:

• Synchronizes with the Polar ProTrainer 5 software for guidance, analysis and creating individual training settings
• Highly sensitive barometric altitude sensor shows your elevation profiles
• Tailor the training information you want to view on the wrist unit