HK21 Smartwatch review | Senbono Budget Smartwatch Value Bluetooth calling blood glucose smartwatch 

I have the exact model but don't have half of those options? No theme settings?

How do you turn on sound for notification, incoming calls and alarm. Mine just vibrates

Oops sorry , thanks to your excellent video I found out that the function for blood pressure can only be opened through the the settings (after double press the side button). Thanks!!

I like your watch reviews.

Thank you very much for this review, I was just thinking about buying it to give it to my mother, with this I was convinced to buy it:)

How to change blood sugar units from mmol/l to mg/dl?

How is the speaker on this one? Just watched the t900 ultra review and the speaker was WEAK!! I’m often in a tractor or on a 4 wheeler. Think this one is loud enough? Thanks! Great watch reviews!

I have exact the same watch but it does not has the option for blood pressure, only a 'stress' monitor (?). For the rest: this watch is ok!

What about NFC pay?

How do we change the date and time at this time?