The American Health Blood Pressure Monitor is a colour-changing device designed to help North American individuals monitor their health and wellness. Featuring an LED display and powered by batteries, this monitor is FDA 510K compliant and includes a USB connectivity option for ease of use. Made in China, this set includes a single monitor to assist users in tracking their blood pressure levels accurately and efficiently. Perfect for those looking to prioritize their health and wellbeing. Tested on myself works pumps air into strap and looks at heart rate.