The FreeStyle Libre 14 day sensor is part of a continuous glucose monitoring system, checking your readings day and night, and is accurate for insulin dosing.
The small sensor is about the size of two stacked quarters and can be scanned discreetly, even through clothing. You can even scan the sensor with your compatible smartphone.
The FreeStyle Libre 14 day sensor is painless to apply and easy to wear. It is water resistant so you can swim, shower or exercise.