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Head Mounted Displays are the most common and in many ways the most practical way of experiencing virtual reality (See: [[#A note on CAVEs]]). As the name suggests, Head Mounted Displays (HMDs) are display devices worn on your head, like a helmet or goggles. They typically obscure your view from the real world entirely and feature one display for each eye to project a stereoscopic image onto. Tracking is either done inside the device, or via an external tracking system. Below is an extensive list of considerations for choosing a head mounted display to use for your VR applications.  

Head Mounted Displays are the most common and in many ways the most practical way of experiencing virtual reality (See: [[#A note on CAVEs]]). As the name suggests, Head Mounted Displays (HMDs) are display devices worn on your head, like a helmet or goggles. They typically obscure your view from the real world entirely and feature one display for each eye to project a stereoscopic image onto. Tracking is either done inside the device, or via an external tracking system. Below is an extensive list of considerations for choosing a head mounted display to use for your VR applications.  

==Audio==

==Audio==

===Speakers===

===Speakers===

Many of the modern head mounted displays come with their own audio solutions, either through built-in speakers or flip-down headphones. Of course closed-back circumaural headphones provide better isolation from your environment and more bass than small integral speakers.

Many of the modern head mounted displays come with their own audio solutions, either through built-in speakers or flip-down headphones. Some allow you to plug in your own headphones, but not all head straps are compatible with wearing circumaural (over-ear) headphones. Bluetooth headphones may be supported as well, though often Bluetooth adds a noticeable delay, making it less suitable for real-time applications.

===Microphone===

===Microphone===

===Eye Tracking===

===Eye Tracking===

===Additional Trackables===

===Additional Trackables===