Smart Watch Men 24 hours continuous temperature monitor IP68 ECG PPG BP Heart Rate Fitness Tracker worth to buy? Thanks for it if those of you who have purchased Smart Watch Men 24 hours continuous temperature monitor IP68 ECG PPG BP Heart Rate Fitness Tracker could share about what you think of the product. I would love any extra info, as it is quite pricey as $54.05 and I just want to know it is good before paying for it.