Smart Band Smartband Fitness Activity Tracker Bracelet Heart Rate Blood Pressure Health Monitor Spor worth to buy? Thanks for it if those of you who have purchased Smart Band Smartband Fitness Activity Tracker Bracelet Heart Rate Blood Pressure Health Monitor Spor could share about what you think of the product. I would love any extra info, as it is quite pricey as $26.99 and I just want to know it is good before paying for it.