Wrist measurement method, measurement method, oscilloscope measurement method, measurement group size 2 * 99, group size 40 times/min -199 times/min, pulse detection range, measurement accuracy, blood pressure: ± 3mmHg (± 0.4kPa) The overall size of the host is 82mm * 68mm * 32mm (excluding wristbands), and the sleeve strap is suitable for a weight range of 13.5~19.5cm Approximately 120 grams (excluding batteries)