A8 1.3 inches TFT Screen Smart Bracelet IP67 Waterproof, Stainless Steel Watchband, Support Step Cou worth to buy? Thanks for it if those of you who have purchased A8 1.3 inches TFT Screen Smart Bracelet IP67 Waterproof, Stainless Steel Watchband, Support Step Cou could share about what you think of the product. I would love any extra info, as it is quite pricey as $28.20 and I just want to know it is good before paying for it.