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.

Save $20 off your order of the DR900S with the discount code “VORTEX20.”

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

Review Date
Reviewed Item
Blackvue DR900S-2CH
Author Rating


    • 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.

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