I just received this little wonder – the NO.1 G8 MT2502 Blood Pressure Heart Rate Monitor Smart Watch -- https://goo.gl/R1Dg6p
Yes, I agree, what an odd name for a watch – yet despite all that, this one may yet be a winner. It has a standard size-mount micro-usb power connection and a very solid feel to it. Even the strap which is of course made of plastic, looks good.
You get a choice of watch faces as you can see and mine came with both black and red straps. It has phone, bracelet and watch modes as well as a tempered glass screen.