DT28 1.54 inch TFT Color Screen Smart Bracelet IP68 Waterproof, Metal Watchband, Support Call Remin worth to buy? Thanks for it if those of you who have purchased DT28 1.54 inch TFT Color Screen Smart Bracelet IP68 Waterproof, Metal Watchband, Support Call Remin could share about what you think of the product. I would love any extra info, as it is quite pricey as $37.70 and I just want to know it is good before paying for it.