Dual 4K Recording with STARVIS 2 Capture ultra-sharp detail with dual 4K (3840×2160 @30fps) front and rear recording. Equipped with the Sony STARVIS 2 IMX678 sensor on both lenses, the F77 delivers crystal-clear, balanced video day and night. Enhanced Night Vision with HDR Featuring HDR/WDR technology, a 7-layer glass lens, and a wide f/1.8 aperture, the F77 adjusts to light and shadow for clearer images in low-light conditions—perfect for night driving. Built-in 128GB eMMC Storage Forget memory cards. The F77 uses fast, reliable 128GB eMMC internal storage, offering up to 5 hours of loop recording and reducing risk of data..