Blackvue DR900S-2CH 4K Dashcam Overview

The new 4K Blackvue DR900S dashcam is now available for pre-order. I’ve been fortunate enough to get a unit in for testing and review and I must say, I think I’ve got a new favorite dashcam! This thing is seriously impressive. Here is an overview of the DR900S and my initial impressions.

DR900S Resolution and Detail

The DR900S is essentially a 4K version of Blackvue’s previous top-of-the-line DR750S (which records at 1080p). With 4 times the resolution, it does a much better job of capturing important details such as license plates.

Blackvue DR900S vs. DR750S Delorean license plate comparison

Blackvue DR900S vs DR750S license plate comparison in parking lot

Note: The front camera records at 4K, but the rear camera records at 1080p. In fact it’s the exact same rear camera as the DR750S. For those of you upgrading to the DR900S from a previous Blackvue dashcam, see here for more information about compatibility with previous gen Blackvue mounts and cables.

File Sizes

To help keep file sizes down, Blackvue has also added a new compression algorithm known as H.265. It’s more efficient at compressing video and it means that file sizes with the 4K DR900S are actually the same as the 1080p DR750S! Very impressive!

(With both dashcams set to the highest video quality level and a 25 Mbps bitrate, videos are ~190 MB/min.)

This means that you don’t have to worry about blowing through your memory card space, just because you’ve upgraded from 1080p to 4K.

Blackvue DR900S App H.264 H.265

Improved WiFi

The DR750S supported WiFi with 802.11n at 2.4 GHz for streaming video from your dashcam to your phone.

The DR900S adds 802.11ac at 5 GHz for even faster WiFi streaming and file downloads.

Additionally, there’s now a new option available to reduce the video streaming / playback quality for faster playback as well.

Blackvue DR900S reduced quality WiFi streaming

Overall Impressions

The DR900S looks like it’s set to be the best dashcam on the market.

I’ve previously done a detailed comparison with the best high end dashcams including the Blackvue DR750S, Thinkware F800 Pro, and DOD RC500S. The DR750S was my top pick.

With the updates that the DR900S brings including 4K and improved video compression, the DR900S is a very nice step up in performance over what was previously my top dashcam pick. In fact it looks like it is quite likely the best dashcam on the market.

Pre-order the Blackvue DR900S-2CH here (USA)

Pre-order the Blackvue DR900S-1CH here (USA)

Pre-order the Blackvue DR900S-2CH here (Canada)

Pre-order the Blackvue DR900S-1CH here (Canada)

Blackvue DR900S and B-124

This website contains affiliate links and I sometimes make commissions on purchases. All opinions are my own. I don’t do paid or sponsored reviews.

Click here to read my affiliate disclosure.

Review Date
Reviewed Item
Blackvue DR900S-2CH
Author Rating
Product Name
Blackvue DR900S-2CH
USD 479
Product Availability
Available in Stock

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    • mark klein on April 19, 2018 at 9:33 am
    • Reply

    Can you possible clear this up for me. I now have a Blackvue 750dr 2 channel. Its my understanding that I still have to buy a dr 900 2 channel to allow my rear camera to work since the one channel front camera does not have a connection for the rear camera. Do you know if the dr 750 rear camera is compatible with the dr 900 front camera.

    • mark klein on April 19, 2018 at 9:59 am
    • Reply

    Found the answer. You cannot order a one channel dr 900 and use the existing rear camera since the dr900 one channel has no port for the rear camera. Bummer.

    1. Yeah it is a bummer. I thought it would have the port which would be great for those of us upgrading from the DR750S-2CH.

    • Jonathan on June 1, 2018 at 12:40 pm
    • Reply

    Is there a polarizing filter? If not, why not?? What good is 4K if you have trouble seeing through windshield glare? Secondly, the 162 degree viewing angle is too much fish-eye distortion. Their previous model was a more reasonable 149 degree viewing angle. Some of us also use the dashcam to record road trips as well, and the fish-eye effect is bothersome. A wider angle field of view also makes it harder to see license plates. Also, no 60 fps? Overall disappointment with their new model.

    • Stephen Stechly on June 4, 2018 at 3:35 pm
    • Reply

    I’m very interested in finding out your thoughts about an alternative method to power the BlackVue Dash cam. I’ve seen a product called the “snap n go quick hardwire kit” that plugs into the OBD. It seems to function much like the power magic pro from BlackVue, without all the extra wiring. Are there ant pros/cons I should be aware of?

    1. Oh interesting idea. I used to run a V1 off of my OBD-II port and the V1 would shut off with the car. I wonder if all cars provide power via the OBD-II port when the car is off. I don’t know. Looks like it’s much easier to install than the PMP, though you don’t have all the configuration options which isn’t a huge deal.

    • Robert Hunt on June 15, 2018 at 1:18 pm
    • Reply

    I have a spot in my truck for an auxiliary battery, could I use that to power my camera at night or while I’m at work?

    • Jumanjiarts on July 14, 2018 at 1:24 pm
    • Reply

    Hi, I am looking for a parking mode dashcam. The sole purpose is to catch perps who scratch cars in our area. The other options are not needed. The cam should record the whole night of video (like 16 hrs+), so I guess hardwired cam is the right option. If you think a battery is better, please not in the response.

    The cam you reviewed are very pricey for just one feature, i’d be looking for one about 200 euros.
    What would be the best cam to buy for the parking mode only?

    1. You generally won’t be able to record all of the 16 hours onto a memory card before filling it up so you’ll be reliant on a feature like motion detection or impact detection so that it only records when something happens. I find the Blackvues to have the best parking mode capabilities. Pair it with the B-124 battery and you’ll have 20-24 hours of record time.

      If you’re okay with manually switching between driving and parking mode, and it sounds like you will be, a Viofo A119 set into motion detection mode and a cheap USB battery pack should actually work if you’re looking for parked recording only and not driving recording.

        • Jumanjiarts on July 16, 2018 at 2:26 am
        • Reply

        Thanks for the answer!
        1 I have found that the batteries are much more expensive than hardwiring. What about constant recording in SD? Will it fit 16hrs on 128GB card?
        I’ve tried one can (apeman) with motion detection and it just did not work. I guess motion tech is not at this level just yet

        2 Yes , I will mind switching to parking mode every time :), will probably just forget it. Are there similar cams to Blackvues with automatic switching to parking ? And without iPhone price tag)

    • Paul on July 27, 2018 at 4:31 pm
    • Reply


    Do you whether it is possible to swap the DR750 IR infrared camera with the DR900 rear camera as I would like to use the DR900 front camera with the 750 infrared camera?

    Is this possible?



    1. Good question. I have no idea… You could ask Blackvue to find out and let me know! 🙂

    • Philippe Guyony on March 4, 2019 at 2:48 pm
    • Reply

    Hi, I bought a DR900S through your link and recommendations and I am happy with it. Thanks. A question that the guys would not answer is either to turn on or off the blinking LEDS in parking mode. Are these upon your perspective deterrent to bad guys or on the opposite a magnet would attract their attention to break in and steal the camera?

    • SRI HARSHA ATLURI on May 28, 2019 at 10:50 am
    • Reply

    Hi, I have been following your content about Dash cams, great stuff! Why don’t you review/ compare any of the cameras with Garmin Dash Cams? Their line up has great features as well and it will be good to see you comparing Garmins against others as well!

    1. Because their dashcams don’t impress me, just like 90% of the dashcams on the market.

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