Y5 Smart Watch Color Screen Real-time Heart Rate Monitor Waterproof Fitness Sports Wristband Pedomet worth to buy? Thanks for it if those of you who have purchased Y5 Smart Watch Color Screen Real-time Heart Rate Monitor Waterproof Fitness Sports Wristband Pedomet could share about what you think of the product. I would love any extra info, as it is quite pricey as and I just want to know it is good before paying for it.