characteristic ★ Dynamic blood pressure (BP) simulation of arm and wrist cuff monitors ★ Built in air pump: used for high-pressure and low-pressure air release inspection, leakage inspection, and providing a pressure source ★ Built in sealed container: can directly test non-invasive blood pressure monitors without cuffs ★ Adopting high-precision pressure sensors for more accurate numerical values ★ Equipped with pressure calibration function for blood pressure instruments ★ Built in newborn, adult sealed container, compact design, convenient to carry ★ Equipped with a large capacity lithium battery, it can work continuously for more than 8 hours when fully charged, and blood pressure measurement should not be less than 100 groups