Smart Watch Men 1.78 inch HD Screen IP68 Waterproof Heart Rate Monitor Fitness Tracker Sports Watch worth to buy? Thanks for it if those of you who have purchased Smart Watch Men 1.78 inch HD Screen IP68 Waterproof Heart Rate Monitor Fitness Tracker Sports Watch could share about what you think of the product. I would love any extra info, as it is quite pricey as $59.99 and I just want to know it is good before paying for it.