Throughout the world, high blood pressure (hypertension) is said to affect 1 in 4 men and 1 in 5 women. Many people do not actively seek treatment as they have no subjective symptoms, but if left untreated, it can cause serious illness such as heart attacks and strokes. OMRON, which uses technology to solve social issues, aims to reduce cases of brain and cardiovascular diseases caused by hypertension to zero. To that end, we undertook the challenge of developing a wearable blood pressure monitor capable of measuring blood pressure that fluctuates due to various factors such as diet and sleep at any time. Overcoming multiple barriers finally led to the world’s smallest wristwatch-type wearable blood pressure monitor that can achieve medical accuracy. Behind the success recognized by TIME magazine and other medical journals, there was a keen desire to deliver the monitor to those waiting for it without fail.