VIOFO A139 PRO 2CH First 4K HDR Front and Rear Dashcam with the Newest Sony STARVIS 2 IMX6

First 4K HDR with Sony STARVIS 2 Sensor Dashcam
Front: Sony STARVIS 2 Sensor 8MP 1/1.8 IMX678 
Rear: Sony STARVIS Sensor 2MP IMX291
2 Channel 4K 3840x2160P 30fps + 1080P 30fps
F1.6 Aperture 7 Elements Glass Lens 
140°+ 170° Wide Viewing Angle
Dual-Band Wi-Fi Built-in 2.4GHz & Upgraded 5GHz
G-Sensor & Motion Detection Supported
Voice Notification in Multiple Languages Supported
User-friendly Installation with super slim coaxial cable and miniature connectors
GPS module & Front Circular Polarizing Lens (CPL-200 Included)
Support External Microphone (Optional, Not Included)
Bluetooth Emergency Remote (Optional, Not Included)
Support MicroSD Card up to 512GB (Optional, Not Included)