Duration, average heart rate, maximum heart rate of exercise session
Backlight
The WM-5 has one novel feature: the calories count down timer. This feature allows you to set your calorie consumption goal prior to your exercise. The timer will alert you when you have burned your specified amount of calories during your exercise. The WM-5 works out your calories burnt using 4 pieces of information: Your weight, your gender, the session duration and your heart rates while you were exercising.
Note: The WM-5 can interface with heart rate interactive exercise equipment. You can replace the battery for the chest strap transmitter yourself but not for the wrist watch unit.
Summary
Just like the Ekho E-10, the WM-5 is a basic and simple heart rate monitor. The main difference between them is that the WM-5 has calories counting ability to help you with your weight management goals.