Business Men Smart Watch 1.3" 360*360 Display Bluetooth Call ECG Heart Rate IP68 Waterproof Smartwat worth to buy? Thanks for it if those of you who have purchased Business Men Smart Watch 1.3" 360*360 Display Bluetooth Call ECG Heart Rate IP68 Waterproof Smartwat could share about what you think of the product. I would love any extra info, as it is quite pricey as $89.99 and I just want to know it is good before paying for it.