F25 1.3 inch TFT Color Screen Steel Watchband Smart Bracelet, Support Call Reminder/ Heart Rate Moni worth to buy? Thanks for it if those of you who have purchased F25 1.3 inch TFT Color Screen Steel Watchband Smart Bracelet, Support Call Reminder/ Heart Rate Moni could share about what you think of the product. I would love any extra info, as it is quite pricey as $30.99 and I just want to know it is good before paying for it.