Optical Sensor, Flash: 32MB, Image quality: 2million pixels CMOS, encripted fingerprint , watersplash, work well: dry, wet, or rough fingerprint, life fingerprint detection, LED: White, interface socket: USB Type A, Image Format: RAW, BMP, JPG, Template Size: 1- 4KB (ZKFinger V10.0);1568 B (ISO 19794-2), Weight: 0.12kg, Dimension: 49 * 44 * 20.1mm (L*W*H)