Vuzix M400 Review

Vuzix M400 Review


In February of 2020 Vuzix launched their latest smart glass device, the Vuzix M400. The Vuzix M400 is the successor of the Vuzix M300XL. In this review we are going analyze the Vuzix M400 in the following fields: Camera & Display, Comfort & Durability, Hardware & Navigation and Software.

Camera & Display

The Vuzix M400 is the first AR smart glass in the market with a 4K camera. This gives the Vuzix M400 the capability to capture 4K videos. Further, you can take 12.8 megapixels photos with the inbuilt camera. The high quality video capture makes it easier for the remote expert to see what the worker is seeing. A disadvantage is that the Vuzix M400 camera is not separately adjustable from the display. When adjusting the angle of the display (for example, for a better view) the angle of the camera is also adjusted, which can result in odd camera angles.


The Vuzix M400 display is located in front of one eye (left or right) and the angle can be adjusted (together with the camera). The display consists of a small high quality OLED screen. OLED screens are, generally speaking, better with contrast then LCD screens as they can produce a darker black. Therefore, the display of the Vuzix M400 remains clear even in direct light.

– Superior 4K video recording
– The OLED display gives sharp contrast

– The camera angle is not adjustable without adjusting the angle of the display.

RealWear HMT-1

RealWear HMT-1Z1Vuzix M400Vuzix Blade

HoloLens 2

Video quality

1080p 30fps

1080p 30fps4k 30fps720p 30fps / 1080p 24fps

1080p 30fps

Photo quality

16 MP

16 MP12.8 MP8 MP

8 MP

Camera FOV

20 degrees

20 degrees16.8 degrees19 degrees

52 degrees

Display Type




Display Resolution

854 × 480

854 × 480640 x 360480 x 853

2048 x 1080 (per eye)

Comfort & Durability

The Vuzix M400 weighs only 180 grams and is therefore the lightest smart glass available in the market. However, the Vuzix M400 frame rests mainly on your nose and ears which can feel uncomfortable when wearing it for a longer period of time. Further, the battery and camera compartments feel firm and strong, but the frame keeping it together feels very brittle.


The Vuzix M400 is also way more durable than previous models from Vuzix. The Vuzix M400 is dust and water resistant with an IP rating of 67. This means it can withstand being underwater for 30 minutes and survive a constant bombardment of dust. Finally, it’s also fall proof tested to 2 meter drops.

– IP67 certification. dust & waterproof
– Drop tested 2 meters.
– Lightweight

– Main frame is fragile

RealWear HMT-1RealWear HMT-1Z1Vuzix BladeVuzix M400HoloLens 2
IP RatingIP 66IP 67IP 67
Water ResistantYesYesNoYesNo
Dust ResistantYesYesNoYesNo
Fall Resistant2m2mNo2mNo
ATEX certificationNoYesNoNoNo
Hard hat mount YesYesNoYesNo
Headband mountYesYesNo Yes No

Hardware & Navigation

The Vuzix M400 comes with 64GB of internal storage, which is a lot higher than industry average. However, the Vuzix M400 does not support additional external memory.

The Vuzix M400 has a 1000 mAh hot swappable battery. This results in a 2,5 to 3 hour battery life.The short battery life is one of the main disadvantages of the Vuzix M400. Especially compared to the 6 hour battery life of the RealWear HMT-1.



The Vuzix M400 is very easy to operate as it can be controlled via voice command, touchpad and navigation buttons. The voice recognition is reasonably stable but not nearly as good as the voice recognition of the RealWear HMT-1. You can select any language for the menu, however, only the following languages have voice recognition: English, Spanish, German, French, Japanese, Chinese. The touchpad navigation works intuitively but can be difficult to use with gloves on. In general, we used the navigation buttons the most. The three navigation buttons can be found on the top of the frame.

– Large internal memory
– Three options to navigate

– Short battery life
-No possibility to increase the memory

HardwareRealWear HMT-1RealWear HMT-1Z1Vuzix BladeVuzix M400HoloLens 2
Type of navigationVoiceVoice Voice & TouchpadVoice & Touchpad & Navigation Buttons Voice & Gestures
Memory16 GB16 GB8 GB64 GB64 GB
SD Card slotYesYesYesNoNo
Battery Capacity3250 mAh3400 mAh1000 mAh
Swappable batteryYesNoNoYesNo


The Vuzix M400 runs on Android 8.1, which gives the advantage that you can manually install Android applications (apk) on the Vuzix M400. Not all Android applications are compatible so testing is recommended. 

To make installing and distributing applications easy, Vuzix set up the Vuzix App store. Before using the Vuzix App store you need to register your Vuzix M400 or other Vuzix devices online, After that you can select applications you would like to install from the Vuzix App Store. These will automatically be pushed to the device(s) of your choice.


The Vuzix app store does not offer any tools to manage groups of devices. This can be very inconvenient when you are trying to manage any large number of devices. For example, when you want to uninstall an application you would have to do this for each individual device. Further, one of the most frustrating parts of the Vuzix App Store is that the website itself is very slow. This has a direct impact on the ease of use. In the Vuzix App store most remote expert platforms can be found. An exception to this is Microsoft Remote Assist 365 and Microsoft teams.

– Android operating system

– No group management
– The Vuzix App Store is very slow

SoftwareRealWear HMT-1RealWear HMT-1Z1Vuzix M400Vuzix BladeHoloLens 2
Operating systemAndroid 8.1Android 8.1Android 8.1Android 5.1.1Microsoft Holographic OS
App storesForesightForesightVuzix App StoreVuzix App StoreMicrosoft Store
Argus Yes Yes No No No
Remote EyeYesYesYesYesNo
Microsoft TeamsYesYesLocalLocalYes
Microsoft Remote Assist 365NoNoNo NoYes
Teamviewer PilotYesYesYesYesNo
UbimaxYesYesUbimax Dev linkNoNo
ZoomLocalLocalYes Yes No


The Vuzix M400 sets itself apart with the 4K video quality and the fact that it’s the lightest smart glass set on the market right now. Furthermore, the OLED display offers a crystal clear image. However, the lack of firmness in the standard frame reduces the amount of use cases it’s feasible for. In general, as a successor of the M300XL it’s a huge step in the right direction, but it needs some accessories to be extensively used in a heavy industrial environment.

Audio Jack3.5mm jackNoMicro USBNoneNone
Charging portMicro USBMicro USB & USB-CMicro USBUSB-CUSB-C
Data PortMicro USBMicro USB & USB-CMicro USBUSB-CUSB-C
Built in speakersYesYesYesYesYes
Speaker volume91 dB91 dBN/A97 dBN/A
Built in microphonesYesYesYesYesYes


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