Viofo A139 Pro

Ranked #5 of 20 on verified specs

Illustration · licensed photo to come

Viofo

Spec score 89/10013 of 17 specs verified
  • 4K recording · Front & rear
  • Sony STARVIS low-light sensor
  • GPS + Wi-Fi built in

Kit: 2CH kit: 4K front + 1080p rear camera. Also sold as 1CH, 2CH IR (front + interior) and 3CH. HK3-C hardwire kit optional

Spec review, not a hands-on test. Everything here comes from Viofo’s official pages and manuals (checked 11 October 2026), linked in the table below. We haven’t tested this camera ourselves yet, so there’s no footage — but owners can leave reviews below.

Quick verdict

Viofo A139 Pro records 4K (front & rear) and scores 89/100 on verified specs, placing it 5 of 20 cameras we track.

Best for: Best Night Vision, Best for Vans, 4K Dash Cams, Best Front & Rear, Best Parking Mode.

What it has

  • 4K front recording
  • Rear camera included
  • Named Sony STARVIS low-light sensor
  • GPS for location and speed on footage
  • Wi-Fi to download clips to your phone

Worth knowing

  • Parking mode needs a hardwire or OBD kit, sold separately
  • 4 specs aren't confirmed on the maker's official pages yet

Full specifications

“Not yet verified” means the maker’s official pages don’t state it clearly — we never fill gaps from shop listings.

Specifications for Viofo A139 Pro
SpecOfficial figureSource
Video resolution4K (3840x2160) front, 1080p rearviofo.com (opens in new tab)
Frame rate30fps at 4K front; 1080p rear at 30fpsviofo.com (opens in new tab)
Image sensorSony STARVIS 2 IMX678 8MP (front), Sony STARVIS IMX291 2MP (rear)viofo.com (opens in new tab)
Field of view140° front, 170° rearviofo.com (opens in new tab)
Cameras in the boxFront & rearviofo.com (opens in new tab)
Night visionSony STARVIS 2 IMX678 low-light sensor (front)viofo.com (opens in new tab)
HDR / WDR4K HDR (front)viofo.com (opens in new tab)
GPSYesviofo.com (opens in new tab)
Wi-FiYesviofo.com (opens in new tab)
BluetoothYesviofo.com (opens in new tab)
Parking modeBuffered parking mode; needs HK3-C hardwire kit (sold separately)viofo.com (opens in new tab)
Cloud featuresNot yet verified—
AppVIOFO appviofo.com (opens in new tab)
DisplayNot yet verified—
Memory cardNot yet verified—
Warranty18 monthsviofo.com (opens in new tab)

How the spec score adds up

  • Resolution30/30
  • Cameras15/20
  • GPS10/10
  • Wi-Fi8/8
  • Parking mode10/10
  • Low-light sensor10/10
  • HDR / WDR6/6
  • Cloud features0/6

Unconfirmed specs score zero. Full scoring method

What the specs tell us

Design and display

Display
Not yet verified
Cameras in the box
Front & rear

Daytime recording

Resolution
4K (3840x2160) front, 1080p rear
Frame rate
30fps at 4K front; 1080p rear at 30fps
Field of view
140° front, 170° rear
HDR / WDR
4K HDR (front)

Night-time recording

Image sensor
Sony STARVIS 2 IMX678 8MP (front), Sony STARVIS IMX291 2MP (rear)
Night vision
Sony STARVIS 2 IMX678 low-light sensor (front)

Parking mode

Parking mode
Buffered parking mode; needs HK3-C hardwire kit (sold separately)

App and connectivity

App
VIOFO app
Wi-Fi
Yes
Bluetooth
Yes
GPS
Yes
Cloud
Not yet verified

Storage and warranty

Memory card
Not yet verified
Warranty
18 months

Real-world footage

No footage yet. We’ll only add clips we can label with the camera, resolution, day or night and weather.

Owner reviews

No owner reviews yet — be the first. We show an average rating once 5 owners have reviewed it.

Research notes

viofo.com product page is internally inconsistent on the rear camera: it says both '4K front + 1080P rear' and '4K front + 2K rear'. The A139 Pro series page and the rear sensor (IMX291, 2MP) support 1080p rear, so that is used. The product page was listed as sold out at time of check ($249.99 USD sale). No screen size is given on any official page; it is widely known as a screenless camera, but this is not stated officially, so screenless/displaySize left null. Max microSD capacity not stated (store sells 64GB-512GB cards). Official manual PDF (support.viofo.com attachment) could not be fetched. uk.viofo.com blocked to automated fetch.

Spotted something wrong? Email corrections@dashcamrankers.co.uk.

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