A heart rate monitor can help show your fitness levels, enabling you to calculate a suitable intensity of exercise.
2.Newer Bluetooth version
vs 4 (the average)
vs 4.1 (best: Misfit Ray)
vs No (83% don't have it)
Measuring pace shows how much time it takes to travel one kilometer or one mile. For example, in running, a 4 minute kilometer would be a very good pace.
vs No (99% don't have it)
ANT+ is a wireless protocol similar to Bluetooth Smart, and is very power efficient. It is mainly used for fitness monitoring devices such as heart rate monitors and cadence sensors to connect to other devices, eg. sports watches, smartphones and cycling computers.
5.Third party app friendy
Can link to your favorite fitness App... Unlike Fitbit