easy to set up and operate, it allows a single button to navigate because in other cardio you get lost in the many buttons especially if one does not use his regular cardio! the transmitter is waterproof, so no moisture from penetrating concern (excessive sweating or heavy rain soaking us to the bone) By cons we can not change the battery, it will change the entire chest pack system. For now has a reliable battery life (1 year of use for now)
