Oklar Wrist blood pressure monitor

Works well, easy to use, the only thing I would change is that I would allow the user to turn OFF the voice telling me what the measurement results are. It is annoying to others around me when using this device, but other than that, a happy customer. EDIT: Purchased June 27th, tried to charge it July 27th when it said the battery needed to be charged. Ok, I, connected to a charger overnight, but the display still showed about 1 bar of charge (the small white icon in the lower left), tried another charger all day today, still saw the low battery indication, but tonight see the documentation shows that this is normal, there is no way to tell if the unit is charging, or not, other than apparently just let it charge overnight and if it works you are good. Well, it was on three different chargers with 3 different cables, that all are shown to work with my phone....but when I tried it tonight, found it does not take a charge, it still does not work. So, while it works great, as long as it has a good battery, and actually the user can turn off the talking (thanks, I did finally read the directions), I will need to send it back for repair and buy another unit to replace it. The support on their web site says send an email....Ok, will do. In the meantime I need another blood pressure monitor...... Update 2: The second order arrived today, and I tried to use the new unit's usb cable to charge the original unit that would not charge.....and it does. So, buyer beware: 1- the displayed 'battery' icon in the bottom left does NOT indicate charging status, don't know why its there 2-if the unit you purchased does not charge when using your own usb cable, you must use THE WHITE USB-A to USB_C cable to charge your unit. 3- You will know it is charging when it is working because you will see a column of green bars that will let you know the charge status, and these lights will flash when the unit is successfully charging, 4- this product WILL NOT CHARGE with any 'normal' usb cable, usb-A to usb-C, or usb-C to usb-C.....their cable is somehow the only one that will work. 5- if the seller just mentioned that the buyer must use their particular usb charging cable, that should solve the issue