Inexpensive device
I can't comment on the price of this unit because its currently not available but I can comment on the reliability of the numbers it put up.  The numbers are big and this unit has a back light on the display that allows you to see it well.  I find it to be reliable for reading my blood pressure correctly, it may be off by a couple of points but not enough to make a significant difference.  It comes with a USB-C cord, a battery and a carrying case, the case is great if you decide to travel with it.  The cuff on this unit says it will fit just about anyone, nope I have a very big arm and it barely fit me.  My suggestion would be to measure your arm prior to purchasing a blood pressure cuff.
Rating: 4 stars