Hello guyz....i hope that u all will be fine...It is the digital machine for measuring the blood pressure of a patient...we can easily use it in our homes...It works on electricity...It has high sensory simulation mercury which can detect easily the blood pressure of a patient. It converts the analog signal into digital dignal and measure the blood pressure more accurately than analog machine apparatus.it has more advantages than analog machine apparatus. it tells about the uper level and lower level of the blood and also tells about the heart beat per second. peoples who are the patients of blood pressure use this machine at home which has more effective results. it has been made by china. China is the super power country in world...it has all the machine which we can not imagine.Hope so that u all are understand this...