Viofo A139 Pro Duo Dash Cam Review

12th December, 2023 | Reviews

Meet the Viofo A139 Pro Duo, an innovative dash cam that leverages the latest Sony STARVIS 2 technology. Whether you opt for the 1-channel, 2-channel, or 3-channel version, this dash cam sets new standards in 4K recording.

Viofo A139 Pro Duo Dash Cam Review

Key Features

The Viofo A139 Pro Duo is a game-changer in the dash cam market, offering:

  • 4K UHD front recording with Sony STARVIS 2 image sensors.
  • Available in versatile configurations (1-channel, 2-channel, 3-channel).
  • Dual-band Wi-Fi for faster connectivity.
  • Voice notification for a seamless hands-free experience.
  • A 300-degree rotatable front camera for comprehensive coverage.
  • Thin 2.88mm coaxial cables for a discreet setup.
  • A complimentary CPL filter for enhanced image quality.

Unboxing the A139 Pro Duo

Inside the box, you’ll find:

  • The front camera, rear camera (for 2-channel), and interior camera (for 3-channel).
  • Necessary cables, including a mini USB cable and a 12V power cable.
  • GPS module for accurate location and speed data.
  • Useful accessories like cable clips, windshield static stickers, and a card reader adapter.

Note: The HK3-C or HK4 ACC hardwiring kit for parking mode and a microSD card are sold separately.

Design and Usability

The A139 Pro Duo sports a sleek, modern design with a focus on functionality:

  • The front camera’s 140-degree lens captures wide-angle shots and can rotate up to 300°.
  • Its screenless interface is complemented by LED indicators for status checks.
  • The emergency button on the device is a handy feature for securing important footage.
Viofo A139 Pro Duo Design

Video Quality

The A139 Pro Duo’s video quality is outstanding, thanks to the Sony STARVIS 2 IMX 678 sensor:

  • 4K recording at 30fps (1 and 2-Channel) and 2160p at 24fps (3-Channel).
  • Enhanced night vision capabilities for clear footage in low-light conditions.
  • The rear and interior cameras provide detailed Full HD footage, ensuring comprehensive coverage.

The Sony Starvis 2 is one of the greatest advancements in image technology, it is also available on our A229 Plus & A229 Pro models.

Parking Mode

The A139 Pro Duo’s parking mode offers:

  • Auto-Event Detection with buffered recording.
  • Low Bitrate and Time-Lapse Recording for extended coverage.
  • Essential for capturing incidents when the vehicle is parked.

Storage and Playback

With support for up to 512GB microSD cards, the A139 Pro Duo ensures ample storage:

  • H.265 encoding for efficient storage of high-quality footage.
  • Easy playback and file management through the Viofo app or a computer.

Connectivity and Installation

  • Dual-band Wi-Fi for quick file transfers.
  • Simplified installation with slim coaxial cables and static stickers for easy mounting.


The Viofo A139 Pro Duo is an exemplary dash cam offering top-tier video quality, a range of useful features, and versatile configurations. It’s an ideal choice for anyone seeking comprehensive coverage and the latest technology in vehicle surveillance. For the latest price on this advanced dash cam, be sure to visit our shop.

Deal of the Month

A119 Mini Dash Cam

A139 Pro 2 channel front & Rear

(1 customer review)
  • 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 Lens140°+ 170° Wide Viewing Angle

Original price was: £329.99.Current price is: £289.95.

Until Deal Ends








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