The 70mai Dash Cam 4K A900 / A900 Ultra is one of the latest flagship car cameras, offering simultaneous front and rear recording in 4K UHD with dual HDR support for comprehensive coverage while driving and parked. Key Technical Specifications Recording Resolution: 4K True HD for front and rear cameras. Processing Technology: Dual HDR to balance lighting and clarify license plates in challenging conditions (tunnels and night driving). Aperture: Wide f/1.55 aperture to increase light absorption and improve night vision. Power Supply: Supercapacitor for higher safety and excellent tolerance to high temperatures. Data Transmission: LVDS Digital Transmission for high-speed digital transfer, preventing lag or video quality loss. Key Features and Performance Advanced Night Vision: Relies on 70mai Night Owl Vision™ 2.0 and MaiColor Vivid+ Solution™ technologies to enhance video colors and clearly read car license plates. Buffered Recording: In case of a collision or vibration, the camera automatically saves footage before and after the event to protect evidence. 24-Hour Parking Surveillance: Supports parking surveillance mode (when connected with the dedicated fuse cable) with low power consumption. 4G Network Support: Enables compatibility with a 4G SIM card to receive live alerts and remote monitoring via the 70mai app.