A reputable automatic blood pressure monitor does not require regular calibration. As long as the device is fully functional, blood pressure readings will be accurate. That said, Omron recommends accuracy checks of our blood pressure monitors to be conducted every two years. This is not to calibrate the device, but to ensure that there is no damage to the cuff (air leakage) or any other wear & tear of the device that could result in device malfunctions. As part of the routine check, we will cond