Other special heart rate monitor features include VO2, altitude measurement, average, lowest and maximum heart rate reading, and many more. Just make sure that you can use most of the features and not allow yourself to get confused on the complicated features and procedures of the heart rate monitor. Determine if you are using it for swimming, biking, running, or plain exercising. This would greatly narrow down your list of possible heart rate monitor. For beginners of course, there are particular heart rate monitors that are not complicated and not expensive. For more advanced users, there are several selections of heart rate monitors that would answer the demands for features. Liz was able to discard those unnecessary pounds and had gained the advantages of improved health and fitness condition. This gave her less stress, more vitality, and more energy. The Mio heart rate monitor is able to provide an accurate on-demand heart beat reading. Since it is strapless Mio heart rate monitor is more comfortable and easy to wear without the need to have a belt strap around the users chest. Polar also has different types of heart rate monitors that are suited for each type of user with different demands. For starters and for those whose demands are only to monitor their heart rate during regular exercise, Polar provides the F series. The F5, F4, F4 female, FS3, FS3c, FS2, FS2c, FS1 plus the F1, F2, and the F3. Some special Reebok heart rate monitor models come with a cruise control training system that would automatically personalizes your target zone. Meaning, whether you are in a beginner, mid-lever or high intensity level, the Reebok heart rate monitor would adopt to your fitness level. This is possible through an alarm, both audio and visual, that would send a signal if you are out of your set zone. Since this is the process, the Reebok strapless heart rate monitor provides an in demand only reading. This is different from the usual chest worn heart rate monitors that would give heart rate reading from start to finish. The Reebok strapless heart rate monitor would only give the heart rate reading whenever requested.