M3 0.96 inches TFT Color Screen Smart Bracelet IP67 Waterproof, Support Call Reminder /Heart Rate Mo worth to buy? Thanks for it if those of you who have purchased M3 0.96 inches TFT Color Screen Smart Bracelet IP67 Waterproof, Support Call Reminder /Heart Rate Mo could share about what you think of the product. I would love any extra info, as it is quite pricey as $51.90 and I just want to know it is good before paying for it.