<s>
There	O
are	O
two	O
primary	O
categories	O
of	O
virtual	B-Application
reality	I-Application
(	O
VR	O
)	O
headsets	B-Device
:	O
</s>
<s>
Standalone	O
devices	O
that	O
have	O
all	O
necessary	O
components	O
to	O
provide	O
virtual	B-Application
reality	I-Application
experiences	O
integrated	O
into	O
the	O
headset	O
.	O
</s>
<s>
Oculus	O
Mobile	O
SDK	O
,	O
developed	O
by	O
Oculus	O
VR	O
for	O
its	O
own	O
standalone	O
headsets	B-Device
and	O
the	O
Samsung	B-Device
Gear	I-Device
VR	I-Device
.	O
</s>
<s>
Tethered	O
headsets	B-Device
that	O
act	O
as	O
a	O
display	O
device	O
to	O
another	O
device	O
,	O
like	O
a	O
PC	B-Device
or	O
a	O
video	B-Device
game	I-Device
console	I-Device
,	O
to	O
provide	O
a	O
virtual	B-Application
reality	I-Application
experience	O
.	O
</s>
<s>
SteamVR	O
,	O
part	O
of	O
the	O
Steam	B-Application
service	I-Application
by	O
Valve	O
.	O
</s>
<s>
The	O
SteamVR	O
platform	O
uses	O
the	O
OpenVR	B-General_Concept
SDK	O
to	O
support	O
headsets	B-Device
from	O
multiple	O
manufacturers	O
,	O
including	O
HTC	O
,	O
Windows	B-General_Concept
Mixed	I-General_Concept
Reality	I-General_Concept
headset	O
manufacturers	O
,	O
and	O
Valve	O
themselves	O
.	O
</s>
<s>
Oculus	O
PC	B-Device
SDK	O
for	O
Oculus	B-Device
Rift	I-Device
and	O
Oculus	B-Device
Rift	I-Device
S	I-Device
.	O
The	O
list	O
of	O
supported	O
games	O
is	O
here	O
.	O
</s>
<s>
Windows	B-General_Concept
Mixed	I-General_Concept
Reality	I-General_Concept
(	O
also	O
referred	O
to	O
as	O
"	O
Windows	B-General_Concept
MR	I-General_Concept
"	O
or	O
"	O
WMR	O
"	O
)	O
,	O
developed	O
by	O
Microsoft	O
Corporation	O
for	O
Windows	O
10	O
PCs	B-Device
.	O
</s>
<s>
PlayStation	B-Device
VR	I-Device
,	O
developed	O
by	O
Sony	O
Computer	O
Entertainment	O
for	O
use	O
with	O
PlayStation	B-Operating_System
4	I-Operating_System
and	O
Playstation	B-Device
5	I-Device
(	O
PlayStation	B-Device
VR2	I-Device
)	O
home	O
video	B-Device
game	I-Device
console	I-Device
.	O
</s>
<s>
Open	B-Device
Source	I-Device
Virtual	I-Device
Reality	I-Device
(	O
also	O
referred	O
to	O
as	O
"	O
OSVR	B-Device
"	O
)	O
.	O
</s>
<s>
Other	O
categories	O
include	O
mobile	O
headsets	B-Device
,	O
which	O
combine	O
a	O
smartphone	B-Application
with	O
a	O
mount	B-Device
,	O
and	O
hybrid	O
solutions	O
like	O
the	O
Oculus	O
Quest	O
with	O
the	O
Oculus	O
Link	O
feature	O
that	O
allows	O
the	O
standalone	O
device	O
to	O
also	O
serve	O
as	O
a	O
tethered	O
headset	O
.	O
</s>
<s>
In	O
addition	O
,	O
VR	B-Device
headsets	I-Device
are	O
categorized	O
by	O
the	O
degrees	O
of	O
freedom	O
they	O
provide	O
:	O
</s>
<s>
120º	O
(	O
"	O
Small	O
"	O
)	O
3.5	O
mm	O
audio	O
jack	O
,	O
built-in	O
microphone	O
1x	O
proprietary	O
DisplayPort	O
1.4/USB	O
3.0	O
connector	O
514	O
g	O
$699	O
No	O
controllers	O
or	O
tracking	O
base	O
stations	O
included	O
VRgineers	O
XTAL	O
(	O
upgraded	O
lenses	O
)	O
2018-12-11	O
(	O
AR	O
Tracking	O
,	O
Optitrack	O
and	O
Lighthouse	O
)	O
OLED	B-Device
2560x1440	O
16:9	O
70	O
Hz	O
1210	O
g770	O
g	O
(	O
headset	O
only	O
)	O
$5800	O
Leap	B-General_Concept
Motion	I-General_Concept
hand-tracking	O
,	O
eye-tracking	O
,	O
automatic	O
IPD	O
setting	O
Varjo	O
VR-1	O
2019-02-19	O
AMOLED	B-Algorithm
,	O
OLED	B-Device
1920x1080	O
1920x1080	O
(	O
central	O
focal	O
area	O
)	O
,	O
1440x1600	O
(	O
peripheral	O
display	O
)	O
60	O
(	O
central	O
display	O
)	O
,	O
16.55	O
(	O
peripheral	O
display	O
)	O
60	O
Hz	O
(	O
central	O
display	O
)	O
90	O
Hz	O
(	O
peripheral	O
display	O
)	O
87º	O
3.5	O
mm	O
audio	O
jack	O
optical	O
fiber	O
cables	O
with	O
USB-C	O
605	O
g	O
( $5995	O
at	O
release	O
)	O
Eye-tracking	O
.	O
</s>
<s>
VR	O
&	O
AR	O
Varjo	O
Aero2021-10-21	O
mini-LED	O
,	O
LCD	B-Device
2880x2720	O
35	O
90	O
Hz	O
115°	O
3.5mm	O
audio	O
jack	O
,	O
built-in	O
in-ear	O
headphones	O
with	O
microphone	O
717	O
g	O
$1990	O
Pimax	O
8K	O
2019-02-19	O
LCD	B-Device
Dual	O
3840x2160	O
3840x2160	O
(	O
panel	O
)	O
2560x1440	O
(	O
signal	O
)	O
22.58	O
16:9	O
80	O
Hz72	O
Hz64	O
Hz	O
170º	O
(	O
horizontal	O
)	O
130º	O
(	O
vertical	O
)	O
USB	O
3.0	O
,	O
DP	O
1.4	O
450	O
g	O
$899	O
6DoF	O
dual	O
controllers	O
Valve	B-Device
Index	I-Device
2019-05-01	O
LCD	B-Device
N/A	O
1440x1600	O
11.07	O
9:10	O
144	O
Hz120	O
Hz90	O
Hz80	O
Hz	O
130°	O
(	O
maximum	O
)	O
Off-ear	O
speakers	O
,	O
3.5	O
mm	O
audio	O
jack	O
,	O
built-in	O
microphone	O
Custom	O
cable	O
809	O
g	O
$999	O
(	O
headset	O
,	O
2	O
tracking	O
stations	O
,	O
2	O
controllers	O
)	O
$499	O
(	O
headset	O
)	O
Valve	B-Device
Index	I-Device
Controllers	O
(	O
6DoF	O
with	O
finger	O
tracking	O
)	O
HP	O
Reverb2019-05-06	O
Inside-out	O
markerless	O
LCD	B-Device
N/A	O
2160x2160	O
18.94	O
1:1	O
90	O
Hz	O
114º	O
removable	O
headphones	O
,	O
two	O
integrated	O
microphones	O
,	O
3.5	O
mm	O
audio	O
jack	O
498	O
g	O
( $599	O
(	O
consumer	O
version	O
)	O
,	O
$649	O
for	O
pro	O
at	O
release	O
)	O
6DoF	O
dual	O
controllers	O
Oculus	B-Device
Rift	I-Device
S	I-Device
2019-05-21	O
Inside-out	O
(	O
Oculus	O
Insight	O
)	O
LCD	B-Device
N/A	O
1280x1440	O
11.63	O
8:9	O
80	O
Hz	O
90º	O
In-line	O
audio	O
speakers1x	O
3.5	O
mm	O
audio	O
jack	O
DisplayPort	O
1.2USB	O
3.0	O
561	O
g	O
$399	O
(	O
at	O
release	O
)	O
Second	O
Generation	O
Oculus	O
Touch	O
Controllers	O
HTC	O
Vive	O
Cosmos	O
2019-10-03	O
Inside-out	O
markerless	O
LCD	B-Device
N/A	O
1440x1700	O
13.09	O
72:85	O
90	O
Hz	O
110º	O
In-line	O
audio	O
speakers	O
USB-C	O
3.0	O
,	O
DisplayPort	O
1.2	O
,	O
proprietary	O
connection	O
for	O
mods	O
702	O
g	O
$699	O
(	O
at	O
release	O
)	O
6DoF	O
dual	O
controllers	O
(	O
Mods	O
:	O
eye	O
tracking	O
,	O
WiGig	O
Wireless	O
,	O
Constellation	O
tracking	O
)	O
Varjo	O
VR-2	O
2019-10-15	O
AMOLED	B-Algorithm
,	O
OLED	B-Device
1920x1080	O
1920x1080	O
(	O
central	O
focal	O
area	O
)	O
,	O
1440x1600	O
(	O
peripheral	O
)	O
60	O
(	O
central	O
display	O
)	O
,	O
16.55	O
(	O
peripheral	O
display	O
)	O
9:10	O
60	O
Hz	O
(	O
central	O
display	O
)	O
90	O
Hz	O
(	O
peripheral	O
display	O
)	O
87º	O
2x	O
DisplayPort	O
1.2	O
/	O
2x	O
mini	O
DisplayPort	O
1.21x	O
USB-A	O
3.0	O
605	O
g	O
( $5800	O
(	O
headset	O
only	O
,	O
mandatory	O
support	O
license	O
)	O
at	O
release	O
)	O
Hand	O
tracking	O
(	O
Ultraleap	B-General_Concept
)	O
,	O
eye	O
tracking	O
Oculus	O
Quest	O
(	O
Oculus	O
Link	O
)	O
2019-11-18	O
Inside-out	O
markerless	O
OLED	B-Device
1440x1600	O
14.4	O
9:10	O
72	O
Hz	O
94º	O
Integrated	O
stereo	O
speakers	O
,	O
2	O
×	O
3.5	O
mm	O
headphone	O
jack	O
USB	O
Type-C	O
,	O
Bluetooth	O
,	O
Wi-Fi	O
571	O
g	O
( $399	O
(	O
64	O
GB	O
)	O
,	O
$499	O
(	O
128	O
GB	O
)	O
at	O
release	O
)	O
6DoF	O
dual	O
controllers	O
tracked	O
by	O
HMD	O
,	O
hand	O
tracking	O
Oculus	B-General_Concept
Quest	I-General_Concept
2	I-General_Concept
(	O
Oculus	O
Link	O
)	O
2020-10-13	O
Inside-out	O
markerless	O
LCD	B-Device
1832x1920	O
20.58	O
229:240	O
~	O
23:24	O
72	O
Hz80	O
Hz90	O
Hz120	O
Hz	O
89°	O
Integrated	O
stereo	O
speakers	O
,	O
3.5	O
mm	O
headphone	O
jack	O
USB	O
Type-C	O
,	O
Bluetooth	O
,	O
Wi-Fi	O
503	O
g	O
$299	O
(	O
64	O
GB	O
)	O
(	O
Discontinued	O
)	O
$399	O
(	O
128	O
GB	O
)	O
$429	O
(	O
256	O
GB	O
)	O
6DoF	O
dual	O
controllers	O
tracked	O
by	O
HMD	O
,	O
hand	O
tracking	O
HP	O
Reverb	O
G2	O
2020-11-	O
?	O
</s>
