The widely used oscillometric automated blood pressure (BP) monitor was continuously questioned on its accuracy.A novel BP kit named Accutension which adopted Korotkoff auscultation method was then devised.Accutension worked with a miniature microphone, a pressure sensor and a smartphone.The BP values were displayed on the smartphone screen through the installed App.Data recorded in the phone could be played back and re-confirmed after measurement.They could also be uploaded and saved to the icloud.The accuracy and consistency of this novel electronic auscultatory sphygmomanometer was preliminarily verified here.32 subjects were included and 82 qualified readings were obtained.The mean differences±SD for systolic and diastolic BP readings between Acutension and mercury sphygmomanometer were 0.87±2.86 and-0.94±2.93 mmHg.Agreements between Acutension and mercury sphygmomanometer were highly significant for systolic (ICC=0.993, 95%CI: 0.989-0.995) and diastolic (ICC=0.987, 95%CI: 0.979-0.991).In conclusion, Accutension worked accurately based on our preliminary data.The difference was acceptable.ICC and Bland-Altman plot charts showed good agreements with manual measurements.Systolic readings of Accutension were slightly higher than those of manual measurement, while diastolic readings were slightly lower.One possible reason was that Accutension captured the first and the last korotkoff sound more sensitively than human ear during manual measurement and avoided sound missing, so that it might be more accuracy than traditional mercury sphygmomanometer.By documenting and analyzing of fluctuation tendency of BP values, Accutension helps management of hypertension and therefore contributes tothe mobile heath service.