The SD4FHDT Lifetime System Warranty series offers a 1080p school bus video system for school buses with a higher level of Video Evidence Security virtually eliminating the possibility video files will be viewed by outside parties or on unauthorized video players. This enhanced video file security is shared technology in a High-Definition 1080p school bus video system solution. The SD4FHDT mobile vehicle surveillance DVR has no moving parts in the recording mechanism, making it 100% Solid State Digital. It is able to endure very harsh environments making them well suited for high-risk vehicle applications that require rugged solid state dependability for video evidence. Driver Behavior recording aspects of the 3-Axis accelerometer, combined with the active driver alerts provide a powerful tool for management. Please contact us today if you have any questions regarding our 1080p school bus video system at 866.468.8042. We look forward to assisting you!