Medvice Sphygmomanometer does regular and accurate blood pressure monitoring. Its a quality machine that's reliable and easy to use. We outfitted this device with premium quality components from start to finish. We manufacture the cuff from durable hypoallergenic non-latex nylon. We ensured it would fit every adult arm, from small to extra-large (22cm to 42cm). We gave it a zinc alloy body, so it's tough and durable. For the mechanical components, we provided a prestige metal air needle valve. And a non-stop manometer mechanism and a supercharger check valve. We equipped our machine with a reticulated filter to prevent harmful dust buildup inside the device. We provide a calibration key so that you can make sure the device is giving accurate results. Finally, we made the dial numbers big and easy to read. And we've included a carrying case, so it's easy to take it with you wherever you go. So whether you want a reliable and accurate blood pressure monitor for home use or you're a nurse and require a professional device, Medvice has the machine for you. https://santamedical.com/products/medvice-manual-blood-pressure-cuff-universal-size-aneroid-sphygmomanometer-nurses-bp-monitor-best-adult-bp-machine