Features It uses a three-color display, and different colors indicate whether the user's blood pressure is normal. The wrist measurement design is adopted, which is convenient for measurement, has good fit and reduces errors. One user can store 99 sets of memory values (up to 2 users) to manage blood pressure scientifically. There is a voice prompt during the measurement process to prevent the elderly from being unable to measure. The LCD screen is backlight to ensure your blood pressure readings are easy to read, even in low-light conditions. Specification .