Accuracy - with a minimum deviation of +/- 3mm hg it works on the ocsillometric principle and auto pressurization. Cuff size - 22-36 cm recommended for adults only Interpret readings using the bp value table printed on the left side of the screen along with an average of your last theree readings error message for improper usage of machine or cuff Memory- upto 120 readings can be stored for a single user Easy to use- in case of incorrect usage of device or incorrect cuff placement error message is displayed for the user Display- 45*30 mm compact display Design- works on battery and a medical power adaptor a storage pouch is included with the machine Warranty- 4 years from the date of purchase Kit contents- unit cuff 22*36 4 aa batteries carrying pouch and user manual and an optional medical adaptor