We need to check BP though my wife was set on a wrist type. I researched the wifi model and its proved to be every bit as good as I hoped. Ease of use, easy to read, compact without annoying connections that shift and leak on other models. I haven't had one failure in reading and that makes me feel confident. We have collected data on iPhone, it appears to be a powerful addition, though we haven't analysed them yet. One small issue that could I think be configured by programming update ... it only collects data from one person. That doesn't really impact on its usefulness for me.