The Wellion CALLA premium blood glucose meter stands out with his unique design and the full-color OLED Display. Besides the fast and precise measurement with very small blood sample and the large display, it offers more convenient features: Before- / After-Meal-Marker, Hypo- / Hyper warning (according to the amount of the blood glucose the result has colored background), colored average graphics and averages of 1, 7, 14, 30, 60, 90 days. Furthermore, the meter uses a German memory (last result, all results, average) and a German settings menu (six alarms, time and date, hypo / hyper limits).