I'm thinking of purchasing one of these gizmos.
All I want it for is to monitor my pulse rate. I don't need to watch movies, check my bank balance or visit dating websites.
Just my pulse, to make sure it's not so high I might blow a gasket.
However, looking at the product online, I'm getting the impression that the thing needs to be coupled with a cellphone to work.
Is this correct?
Or are they standalone?