... correct recognition.Huge storage capacity, USB backup supportedLarge storage SD card embedded,USB massive storage device data import/export supported ... 215*150*52mmRecords Supported: 2G SD Card (Support up to 250,000 records), 32G SD Card (Support up to 500, ... Capacity500Record Capacity500,000 records for 2G SD card; 2,500,000 for 8G SD cardRecognition AlgorithmFace Image+ V4.0Recognition Speed ...