Garmin vivosmart 4 heart rate alert

I need a tracker to help me monitor my heart rate in real time. I would like to set my heart rate at low end to be 120, and high end 150. 

If my heart rate is out of this zone, I like to get a vibration as warning. I don't need any other features. 

does vivosmart 4 do this? If so how to set it up? This is to help with my zone 2 training. Draining battery is not a concern. 

If vivosmart 4 cannot do this please recommend the cheapest version that does this. Thank you!