Easy@Home Digital Arm Blood Pressure Monitor
The digital pressure monitor came with batteries :D
I did not read the instruction and it is that easy to use. Just plug in the batteries and press the button.
Plug tub into the monitor and wear the band on your upper arm. Make sure the tub connecting to the arm band is near or on your artery. Once you press the start button the air will be sucked out and the armband will become tighter and tighter but it will not hurt you.
It only takes about a few seconds for the monitor to finish determining your SYS and DIA.