Smart Watch Fitness Tracker,Blood Oxygen Meter, Blood Pressure Monitor, Blood Heart Rate Monitor, IP worth to buy? Thanks for it if those of you who have purchased Smart Watch Fitness Tracker,Blood Oxygen Meter, Blood Pressure Monitor, Blood Heart Rate Monitor, IP could share about what you think of the product. I would love any extra info, as it is quite pricey as $63.99 and I just want to know it is good before paying for it.