The Nike Triax C8 displays heart rate in beats per minute or as a percentage of maximum heart rate. It also has a single programmable target heart rate zones and counts the calories burned during the run. Running in the dark ? The Nike Triax C8 has a backlight ! It furthermore has all the basic watch functions like time, date and alarm.
All in all is this Nike Triax C8 heart rate monitor a pretty complete package with a cool design !
The Nike Imara is not all that different from the Nike Triax C8, slightly less functionality, but a bit cheaper. As with the Triax C8 the Imara also shows heart rate in beats per minute or as a percentage of maximum heart rate. It has a target zone with an out of zone alert and keeps track of the calories burned during your exercise.
The chest strap is not as flexible as your regular chest strap, which makes it a bit harder to get used to. All in all, also a pretty solid buy !