4/8 Channel 720p 1080P Ahd HDD Vehicle Mobile DVR Car Mdvr Recorder with Vehicle Tracking Platform. Advanced Video Compression: Supports H.265 and H.264 formats for efficient storage and transmission. Dual GPS Positioning: Built-in GPS and Beidou modules for accurate vehicle tracking and data upload. Flexible Storage Options: Supports 2.5-inch HDD up to 4TB and SD card up to 256GB for extended recording. Comprehensive Alarm System: Includes 8-channel IO input, G-sensor, and linkage for sound/light alarms and power cut-off. Multi-Language Interface: System supports Chinese, English, and Russian with customizable language options. Hybrid Video Input: Accepts 4 or 8 channels of video input with PAL/NTSC standard support. Optional Connectivity Modules: Supports optional 3G/4G, WIFI, and dual-module GPS/BD for enhanced connectivity.