Omron standard size cuff - 22-32cm (M1,M2, M3, M4, M5)
Connectable:
M2, M3, M3Comfort, M4, M6 Comfort and M7 IntelliIT blood pressure monitors.
Not connectable (can be connected by changing connectors):
M1 Compact, M10 all models, HEM-7000E, HEM-7223-E, HEM-7221-E.
The HEM number can be found at the bottom of the instrument.