The Viofo A139 Pro dash cam is one of the most powerful cameras on the market, featuring the new Sony STARVIS 2 sensor, which offers a qualitative leap in night photography and detail clarity (such as license plates). Viofo A139 Pro Dash Cam Specifications (Front and Rear) Viofo A139 Pro Dash Cam Specifications First: Image Quality and Sensors Front Camera: It comes with 4K Ultra HD resolution (3840 × 2160 pixels) at 30 frames per second, and relies on the advanced 8-megapixel Sony STARVIS 2 IMX678 sensor, with an F1.6 lens and a wide viewing angle of up to 140 degrees. Rear Camera: It operates at Full HD resolution (1920 × 1080 pixels) at 30 frames per second, and uses a Sony STARVIS IMX291 sensor with an F1.6 aperture and a very wide viewing angle of 170 degrees. Second: Smart Technologies and Features The camera features advanced HDR technology to enhance detail clarity in challenging lighting conditions, and supports dual-band Wi-Fi (5GHz and 2.4GHz) to ensure fast file transfer to the mobile app. The device has a built-in GPS system for recording speed and route data, and relies on voice notifications instead of a screen to provide status alerts to the driver, giving it a slim design that does not obstruct vision. Third: Parking and Monitoring Modes The device offers three monitoring options when the engine is off (requires HK3-C or HK4 hardwire kit): an automatic motion and vibration detection option, a Time Lapse recording option to save space, and a low-bitrate continuous recording option to ensure complete trip documentation without interruption. Fourth: Build and Technical Specifications The camera is designed with an electric capacitor instead of traditional batteries to effectively withstand high temperatures, and it supports MicroSD memory cards up to 512GB and uses modern USB-C ports for power and connectivity for easy installation and concealment.