When comparing Immersion-Vrelia Pro-DG1 HMD vs Razer OSVR Hacker Dev Kit, the Slant community recommends Razer OSVR Hacker Dev Kit for most people. In the question“What are the best VR headsets?” Razer OSVR Hacker Dev Kit is ranked 8th while Immersion-Vrelia Pro-DG1 HMD is ranked 17th. The most important reason people chose Razer OSVR Hacker Dev Kit is:
The hardware is under an open license, so it's great for hardware hackers to make and share their improvements. The plastic part 3d models are open and can be printed on a 3d printer as well meaning users are free to customize the looks of the device as well. This also means any manufacturer is free to produce a device using the open hardware and software. Which can lead to more competition which can lead to lower price points.
Specs
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Pros
Pro Easily adjust the lenses
The lenses in the unit are adjustable for separation of eyes as well as for near or far sightedness. This makes sure the unit will work for most people no matter they eye spacing or sight abilities.
Pro Open hardware
The hardware is under an open license, so it's great for hardware hackers to make and share their improvements. The plastic part 3d models are open and can be printed on a 3d printer as well meaning users are free to customize the looks of the device as well.
This also means any manufacturer is free to produce a device using the open hardware and software. Which can lead to more competition which can lead to lower price points.
Pro Modular design
The HMD is designed to be upgradeable, meaning components can be switched out and upgraded as desired. Users can also upgrade between official versions.
Pro Pretty cheap
Its only $299 for the kit, which is nearly half the cost of the Oculus or Vive.
Pro Only requires a mid-spec PC
This makes it usable by a much bigger range of customers. Most gamers will already have a PC that can support this HMD. Specific minimum specs aren't listed.
Pro FPGA for hardware programming
A FPGA is included which allows hardware hackers to better integrate their modifications. FPGAs also make the HMD more flexible.
Pro Individual eye focusing
Users who have different focus points for each eye will rejoice! You can individually focus the left/right lenses to make sure you get the clearest image for yourself.
Cons
Con Not meant for VR
The product page doesn't mention virtual reality, instead it seems to be focused on augmented virtuality (overlaying virtual components into the real world instead of totally immersing the user into a virtual reality).
Con Looks cheap
The front of the device is quite large, looking like it is using a cheap screen that will have quite a lot of weight on the front of the device. No price has been announced, but the looks of the unit on trade show floors looks pretty generic and shoddily put together.
Con Headband not that comfortable
The device uses a tri-band design to attach to ones head. This can be uncomfortable due to how many straps there are and their placement. Other devices use a triangular design which is often considered more comfortable.
Con Low res screens
The included screens for the device are 960 x 1,080, which is less than full HD (1920x1080). Compared to other popular headsets this is low, which can lead to less crisp graphics (most other VR solutions use 1080p or 1440p).