Can you set a custom alarm when you are exercising outside a HR range?

Former Member
Former Member

Can you set a custom alarm when you are exercising outside a HR range?  

I would like to run between the 70-80% Max HR range.  I was hoping I can set up an alarm that vibrates or rings when I go above or below that number.    Been searching the interweb and cannot find anything.  It might just be that I am asking the wrong question.  

Thanks

Brandon