... GPS logger Built-in. 3. 4 infrared lights for night vision 4. AV output. 5. Sound Record High Definiton ... GPS logger/Speed display/Location display. 3. IR night vision function with 4 infrared lights. 4. License plate ... detection recording (sensitivity can be adjusted). 9. Auto night-mode switch. 10. AV output with audio. 11 ... Resolution,Embedded GPS Logger,IR Night Vision Function,AV out,SC DVR-4Z