Have this equipment for several years in daily use. It is practical and super easy to use, the voice prompts and large digits facilitate measurements immensely. Noteworthy is the extremely low consumption of batteries, keep these depending on manufacturer and quality with daily measuring good 5 to 6 months and longer. Likewise Medisana provides pressure cuffs on as a substitute, as well as large upper arms to 42 cm circumference. Of particular note is the measurement accuracy of the device, which in the course of the visit to the diabetologists (is offered there) was determined. Highly recommend this unit.