CE ISO13485 certification, international high standard with basic zero error. Product performance description *Silver Electrode *500 Memory *Tiny 0.6 L Sample Size *The Fast 5 Seconds Test Time *International ISO 2013 Edition Proven Clinical Accuracy *Measurement range: 1.1 to 33.3 mmol/L or 20-600mg/dl or 1-3.3mmol/L *Can record pre - or post meal values, with an average of 15 and 30 days *6 months life after first open, as compared to 3 months for other brands