B58 Heart Rate Blood Pressure Monitor Brightness Control Custom Dial Colorful Smart Watch Pink worth to buy? Thanks for it if those of you who have purchased B58 Heart Rate Blood Pressure Monitor Brightness Control Custom Dial Colorful Smart Watch Pink could share about what you think of the product. I would love any extra info, as it is quite pricey as $48.67 and I just want to know it is good before paying for it.