N109 0.73 inch OLED Screen Display Bluetooth Smart Bracelet, IP67 Waterproof, Support Pedometer worth to buy? Thanks for it if those of you who have purchased N109 0.73 inch OLED Screen Display Bluetooth Smart Bracelet, IP67 Waterproof, Support Pedometer could share about what you think of the product. I would love any extra info, as it is quite pricey as $32.90 and I just want to know it is good before paying for it.