Included SD card can be removed to view files on a computer. Provides Around-the-Clock Monitoring of the Vehicle. Up to (4) Cameras Can Record while Ignition Is On.View All Cameras at Once On External Monitor (Not Included). Up to (3) Triggers can Activate System. SD Card can be Removed to View Files On a Computer. Full Function Remote and Wired Microphone Included. Can be Integrated Into Alarm System for Triggered Recording. Please allow us the opportunity to resolve any issues before opening disputes and/or leaving feedback. If the item includes an ac power adapter for use, it will be 120 volts. Please ensure that this product is compatible with the standards within your country before purchasing.