Price: $199.95  

Take along the Polar CS300 Heart Rate Monitor to wirelessly track your speed, distance, and heart rate on your next burly ride, so you can make sure youre training efficiently.Use the Polar Fitness Test function to test your VO2 max to determine your current fitness level. The included bike mount lets you view your distance, speed, and estimated time of arrival easily. The CS300 will also show you your calorie expenditure, so you can be sure to eat enough to fulfill your caloric deficits. Hook the CS300 up to your PC and analyze your whole workout including your maximum, average, and target heart rate.