Leelbox Smart Watches,Fitness Trackers with Heart Rate Monitor/Body Temperature Monitor/Blood Pressu worth to buy? Thanks for it if those of you who have purchased Leelbox Smart Watches,Fitness Trackers with Heart Rate Monitor/Body Temperature Monitor/Blood Pressu could share about what you think of the product. I would love any extra info, as it is quite pricey as $49.99 and I just want to know it is good before paying for it.