The On Call Extra Glucometer is a simple and reliable glucose monitoring device for effective diabetes management. This easy to use glucose meter is equipped with advanced biosensor technology for fast and accurate glucose testing and gives results in just 4 seconds with clinically proven accuracy in compliance with EN ISO15197:2015Easy to use; pain free lancetAdvanced Biosensor Technology for Fast and Accurate Glucose TestingAuto calibration inside every stripAccurate results that comply with ISO 15197:2013Results in just 4 seconds with only 0.4 UI blood sampleStores 500 readingsOn Call Care Alliance app for ongoing monitoring