Freestyle Libre 2 Sensor - Continuous Blood Glucose MeterFreestyle Libre 2 Sensor Continuous Blood Glucose Meter The FreeStyle Libre 2 system tracks your glucose levels anytime, anywhere and alerts you if its too low or high. Helping you make small steps toward progress. And lower your A1c over time. FreeStyle Libre 2 is a continuous glucose monitoring (CGM) system. Its a small, wearable sensor that sends real time glucose readings directly to your app without fingersticks. Longest lasting self applied