ID130Plus 0.96 inch OLED Touch Screen Bluetooth 4.0 Smart Bracelet, IP67 Waterproof, Support Fitness worth to buy? Thanks for it if those of you who have purchased ID130Plus 0.96 inch OLED Touch Screen Bluetooth 4.0 Smart Bracelet, IP67 Waterproof, Support Fitness could share about what you think of the product. I would love any extra info, as it is quite pricey as $31.20 and I just want to know it is good before paying for it.