R15 1.3 inch IPS Color Screen Smart Bracelet IP67 Waterproof,TPU Watchband, Support Call Reminder /H worth to buy? Thanks for it if those of you who have purchased R15 1.3 inch IPS Color Screen Smart Bracelet IP67 Waterproof,TPU Watchband, Support Call Reminder /H could share about what you think of the product. I would love any extra info, as it is quite pricey as $37.70 and I just want to know it is good before paying for it.