The BP monitor I ordered from Walmart.com came in the mail 2 days after placing the order.
While the screen surround stated mmHg, the unit was calibrated in the Kpa or Kilo-Pascals scale. That is a European scale. In the US, we use the mmHg or millimeters of mercury scale. They do correlate, but I don't want to make conversions on each reading. I looked for a way to change the displayed units, but found none. This usually is just a "settings" choice. "Settings" only allow adjustments for date and time.