Smart Watch ECG PPG Heart Rate Monitor Bluetooth Call 1.75 inch Full Touch Screen Temperature Smartw worth to buy? Thanks for it if those of you who have purchased Smart Watch ECG PPG Heart Rate Monitor Bluetooth Call 1.75 inch Full Touch Screen Temperature Smartw could share about what you think of the product. I would love any extra info, as it is quite pricey as $32.99 and I just want to know it is good before paying for it.