Because I suffer for a long time from high blood pressure, and was asked by my doctor to also home to measure blood pressure, I've bought a sphygmomanometer for the wrist. The measured values, however, were so staggering that I so my physician be consulted again. This told me to an upper arm monitor. The Beurer BM 58 is very easy to use. Create cuff - this is however on the left arm a bit awkward because you away from you the velcro closing - Switch on the device and press Start. The device measures reliably and has my doctor now prompted to change my medication. I highly recommend this device really, this looks really stylish yet made, even if it is not stored in the supplied case.