Vktech Wrist Style Blood Pressure Monitor Sphygmomanometer ABP-A091 Measurement range: Pressure: 30~280 mmHg, 4~37.3kPa; Pulse: 40 - 200times/minute Measurement accuracy: Pressure: Within 3mmHg; Pulse: Read value is within 5% Measuring method: Pressure induction measurement, oscillography Storage capacity: 2*120 groups of memory function Exhaust way: Automatic quick exhaust way