The FreeStyle Libre sensor automatically measures and continuously stores glucose readings day and night. The sensor updates up to every minute and stores up to 8 hours of glucose readings in minute intervals. It can be worn up to 14 days.
Sensor life: up to 14 days
Size: 5 mm height and 35 mm diameter
Weight: 5 grams
Memory: 8 hours (glucose readings stored every 15 minutes)
Water resistance: IP27- can withstand immersion into one metre (3 ft) of water for up to 30 minutes