IP67 waterproof smart watch with Bluetooth 4.0 multi-dial switching sports mode with heart rate moni worth to buy? Thanks for it if those of you who have purchased IP67 waterproof smart watch with Bluetooth 4.0 multi-dial switching sports mode with heart rate moni could share about what you think of the product. I would love any extra info, as it is quite pricey as $42.99 and I just want to know it is good before paying for it.