70mai A810 4K review: a high-spec front and rear dash cam at a great price

The A810 by Xiaomi 70mai is a 4K, two-channel dashcam with HDR, Wifi, GPS, a display, and a decent phone app, all for a bargain price

70mai A810 dashcam on a wooden table
(Image: © Alistair Charlton / Digital Camera World)

Digital Camera World Verdict

You might not have heard of the 70mai A810, but that’s no reason to doubt its 4K credentials. Even for a relatively low price, this is a dash cam that delivers excellent results and packs useful features like Wifi for smartphone video transfers, and GPS. Being a two-channel system, it comes with a rear camera and, while it lacks the visual punch of the main unit, it’s compact and does a decent job.


  • +

    Excellent 4K footage

  • +

    Easy to set up and use

  • +

    Smartphone app works well


  • -

    Only 24 fps at 4K

  • -

    Rear 1080p camera not as impressive

  • -

    Windscreen mount not the best

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You might not have heard of 70mai as a brand in its own right, but you’ll likely be familiar with its parent company Xiaomi, the Chinese tech firm. 70mai makes several models of dash cam, including options with one or two cameras, and options for taxi and rideshare drivers who want to record a view of their interior.

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Resolution4K (front), Full HD (rear)
Frame rate25 fps (front at 4K)
Field of view150 degrees
DisplayYes, 3in IPS
Parking modeYes, optional hardwiring kit required
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Features4K video from a Sony Starvis 2 sensor is the standout feature here, but don’t overlook what else the A810 has to offer. There’s also the rear camera included in this package, of course, plus HDR, Wifi, respectable night vision, parking mode and a decent smartphone app.★★★★☆
DesignIt’s not the smallest dash cam around, but considering it has 4K and a 3in display, the A810 is still pleasingly compact. Three cables sprouting from the main unit can look rather messy. ★★★★☆
PerformanceThe front-facing camera produces fantastic 4K footage, with lots of detail and punchy but accurate colors. It’s let down by a sluggish 25 fps frame rate, however and the 1080p rear camera lacks detail.★★★★☆
ValueImpressive 4K footage, decent design, Wifi and a phone app that works well all add up to create a dash cam that provides excellent value for money.★★★★☆
Thinkware U1000

Thinkware U1000
This is our favorite two-channel dashcam of the moment, and like the 70mai it also shoots 4K video out the front windshield. It’s around twice the price of the 70mai though, so should only really be considered if you have a much larger budget and need features like speed camera alerts and a higher-resolution 1440p rear camera.


Viofo A129 Pro Duo
Also packing 4K to the front and Full HD to the rear, this two-channel dash cam from Viofo is a great budget option. It shoots 4K at a higher frame rate than the 70mai (30 fps vs 25) and includes a display, plus GPS and Wifi. It also delivers great low-light performance for nighttime recording but isn’t particularly compact.

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Alistair Charlton

Alistair has been a journalist since 2011 and used to be Deputy Technology Editor at IBTimes  in London. His specialist tech subjects include smart home gadgets, phones, wearables, tablets and dashcams. He is the host of  The AutoChat Podcast.