iCare® CK-102S, the compact, lightweight wrist monitor provides accurate readings in a convenient size. It comes with an automatic memory function that records the last 90 measurements in groups for efficient tracking. Last 3 Results Average feature, meanwhile, automatically calculates the average readings stored. This blood pressure monitor also has an Irregular Heart Beat detector that automatically alerts you when heart rhythm is 25 % faster or slower than the average rhythm detected during the measuring process.