Wrist blood pressure monitors are favored for the superior level of comfort these offer over alternative solutions, but their advantages don’t stop here. The cuff will inflate to a lesser degree than with an upper arm monitor, and besides applying less pressure on the user, this will also significantly cut down on the time necessary to take a reading.
Its downsides have to do with accuracy. Since the area involved is further from the heart, the measurement will naturally be less accurate. Furthermore, this will make it more susceptible to be influenced by the body's position.