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VR/AR Virtual Reality
Type Head-mounted display
Subtype Discrete HMD, DIY HMD
Platform OSVR
Developer Razer, Sensics
Requires PC
Predecessor OSVR HDK1
Display 5.5 inch? OLED
Resolution 2160 x 1200 (1080 x 1200 per eye)
Pixel Density 441 PPI
Refresh Rate 90 Hz
Persistence Low persistence
Field of View  ???
Optics  ???
Tracking 3DOF, 6DOF
Rotational Tracking Gyroscope, Accelerometer, Magnetometer
Positional Tracking  ???
Update Rate Rotational: 400Hz, Positional: 100 Hz
Latency  ??
Input  ???
Connectivity  ???
Release Date July 29, 2016
Price $399
Website OSVR HDK2


OSVR HDK2 or Hacker Dev Kit 2 is a Virtual Reality head-mounted display created by Razer. HDK2 is the OSVR's second device. It was announced in E3 2016. OSVR HDK2 has an open source and modular design that not only allows the user to replace and renew its hardware components but also build one from scratch.

OSVR HDK2 went on sale on July 29, 2016 at the price of $399. Students and developers can apply to receive 20% discount.


The Open-Source Virtual Reality Hacker’s Development Kit (OSVR HDK) 2 is unlike any other virtual reality headset. The HDK2 kit comprises of the headset, belt clip, manuals, box adaptor, the positional tracker with a tripod, and a cluster of connecting cables and cleaning cloth.

To begin with, connect the belt clip and the positional tracker to the PC using the USB port. Between the belt clip and the IR camera is a 3.5 mm mini-jack, and fixed to it is the adaptor jack. The VR headset is connected to one side of the belt clip. The belt clip has a spare USB port that can be used to connect accessories like Leap Motion. Among the cables, a 3.5 mm connector for headphones is also provided. Connecting the hardware components might look tedious, but with the manual in hand and little technical understanding, the task can be accomplished without much effort.


The OSVR HDK2 has a dual display that runs 90 frames / Second and has 2160 x 1200 pixels as its combined resolution. The OSVR HDK2 has a screen with 441-PPI, RGB-OLED display. To cut the screen effect OSVR had added a silver layer to the display.


HTV Vive and Oculus Rift use flannel lenses; Razer has opted a different system. It uses a dual lens system. Even though the dual lens system isn’t perfect, it’s free from the godrays issue. Furthermore, the dual lens system is heavier than the flannel lenses. The OSVR HDK2 headset has an 110-degree FoV (Field of View).

Infrared Positional Tracking Camera

Razer’s infrared positional tracking camera has a maximum range of 2.4 – 2.7 meters. Although the IR camera of OSVR HDK2 is a good alternative to other tracking cameras, it has certain limitations. The infrared range is sufficient to track standing experiences. The camera’s performance might greatly suffer if the users walk around too much. The infrared LEDs on the rear end of the VR headset allow the camera to capture 360-degree turns.


The OSVR HDK2 Kit doesn’t come with a controller. Users are free to use any suitable controller with the HDK2 kit. Most developers find the Razer Hydra controller a better choice.


Faceplate Module

  • The OSVR HDK2 kit comes with an IR camera
  • The Infrared camera operates at 100 Hz
  • The v1.4 infrared faceplate provides positional tracking
  • Some of the other variations included are the IR faceplate with Leap Motion. The Leap Motion tech is used to support natural interactions, like movement of hands

Main board

  • The gyroscope, accelerometer, and compass are integrated into the sensor hub
  • To use accessories an external USB 3.0 is provided
  • Additionally, for internal expansion 2 USB 3.0 is present
  • To add extra functionality the main board has been made re-programmable


  • A dual display system with a resolution of 2160 x 1200 has been added
  • The OLED silver screen is low persistence, has a ppi of 441, and runs at 90 fps
  • To reduce the screendoor effect OSVR HDK2 has used Image Quality Enhancement technology


  • Ultra-sharp image display is guaranteed with the high performing dual lens system
  • HDK2 has a large eye-box to make the headset more comfortable
  • OSVR ensures faster rendering with color corrected images and low geometric distortion
  • To cater to the needs of the majority of the users HDK2 uses diopters that cover adjustments from +4.5 to -2

HMD Mechanical Module

  • The design focuses on comfort and ease of use
  • Nose bridge with rubber nose inserts, extra padding to reduce pressure on the cheekbone, and bamboo charcoal micro-fiber foam layer makes the headset very comfortable

Belt Box Module

  • Comes with signal boosters
  • Surround sound audio codec has been incorporated into the system
  • Extra USB ports


Part Spec
Display 5.5 inch?? OLED
441 PPI at 90 FPS
Resolution 2160 x 1200 (1080 x 1200 per eye)
Refresh Rate 90 Hz
Field of View  ????
Optics  ???
Interaxial Distance Adjustable
Tracking 6 degrees of freedom
Rotational Tracking Gyroscope, Accelerometer, Magnetometer
Positional Tracking IR-LED faceplate and External Infrared Camera
Update Rate Rotational: 400Hz
Positional: 100 Hz
Latency  ??
Connectivity 1 external and 2 internal USB 3.0 ports
Weight  ??
Facemask bamboo charcoal microfiber foam layer
Input Various, such as Mouse and Keyboard, Gamepads, Leap Motion, Nod
Cost $399.99

System Requirements

In this regard, Razer follows the footsteps of HTC Vive and Facebook. The PC that powers the OSVR HDK2 headset must have a graphic card that’s at least a Radeon R9 280 or NVIDIA GeForce GTX 970. The PC must use Intel Core i5-4590 or higher as the CPU. Finally, the PC must have at least one HDMI 1.3 port and two USB 2.0 port to connect the various cables from the headset.

Setup Tutorial

After downloading, install the OSVR Server on the PC. Following the installation process and before running the OSVR Server for the first time, the user needs to configure the server in the control panel. The OSVR Server is the most important element of the whole system. It’s the driving force behind the Runtime Software. It initiates and manages crucial functions such as loading of various plug-ins, communications between the software and hardware, and rendering the pipeline. To use any of the applications, users are supposed to start the OSVR Server first.

Through the control panel of the OSVR Server, a user can perform many functions including enabling the HMD, checking and upgrading the firmware, and adjust various other settings. Additionally, a user can also choose either the direct or extended mode, re-center the HDK2 headset, enter the interpapillary distance, and toggle side by side. When the direct mode is chosen, the software will communicate only with the virtual reality headset, whereas, in the case of the extended mode the VR headset acts as the supplementary display option.


The scripts, software, tools, and drivers needed to run the HDK 2 are on the official website (http://www.osvr.org/) of OSVR. Users can visit the website, download the installation setup and install the necessary software package in the PC.




June 13, 2016: OSVR HDK2 is announced at E3 2016.


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