BPM Connect is a digital monitor intended for use in measuring blood pressure and heart rate in an adult population with an arm circumference ranging from 9 inches to 17 inches (22 cm - 42 cm).
https://support.withings.com/hc/en-us/sections/6215752935825-BPM-Connect
https://support.withings.com/hc/en-us/sections/360003813233-FAQ