The gauge can be clumsy to position, and without a D-ring cuff can be difficult to apply by oneself. It may not work well for the hearing or visually impaired or for those unable to perform the hand movement needed to squeeze the bulb and inflate the cuff. Automatic equipment is contained in one unit, so less manual dexterity is required than for systems with separate gauge and stethoscope. It's easy to use, minimizes human error and is good for people with hearing or vision loss. The cuff may fit around the wrist or arm.
Mechanism is complex, fragile and sensitive.
Device accuracy must be checked first by comparing to a mercury device, then during measurement on the user. The most accurate devices don't give accurate readings on certain individuals. Body movements may influence accuracy. Requires careful cuff placement and arm positioning for accurate operation, especially the wrist cuff model. Some models are designed for use on only the right or left arm.