Product parameters:Product name: electronic blood pressure monitorCategory: 【Dual Channel Sphygmomanometer】+Charge Power SupplyFunctions: Heart rhythm measurement, pulse measurement, blood pressure measurement, power adapter, hypertension alarm, voice intercom diseaseProduct advantages: body movement prompt, automatic, large font, large screen, backlit display voice☆ What is the correct measurement method?(1) in a warm room;(2) at the same time every day;(3) sitting upright on a chair;(4) tightening the armband;(5) keeping the armband at the same height as the heart;(6) doing Take a few deep breaths and relax.☆ The best time to measure blood pressure?I hope to be able to measure 3 times a day early, middle and late. When I get up in the morning and have a good time, if there is no urine after a few minutes of urine and urine, avoid the following measurement. Before and after exercise, within 3 hours after drinking, drink, coffee, black tea Before and after bathing, before and after smoking. Take a few deep breaths before the measurement, relax, avoid repeated measurements, sit in a chair, and stand upright.Note: This product does not contain a battery.Due to different measurement methods, there will be slight errors, please prevail in kind.