The GlucoNavii is an upgraded meter from SD Biosensor, the makers of the top-selling SD Codefree Blood Glucose Meter. This new meter has all the benefits of the Codefree but boasts greater accuracy due to a wider haematocrit (HCT) range of 0-70% and GDH-FAD enzyme technology. This means that the results are not impacted by extremes in HCT nor variations in oxygen concentration respectively. The strips also require a much smaller blood volume of just 0.5uL helping you to avoid getting sore fing. GlucoNavii test strips - no need for re-coding strips or re-setting the meter for every new batch of strips purchased. Long expiry dates on the Strips supplied. Just insert your strip into the slot and the meter will automatically give you a reading in just 5 seconds. These test strips can only be used with the GlucoNavii Monitor.