VX or its variant VC armor is a implant developed by Lonhorn Corporation and Arvonus Corporation's Weapons Division. The implant provides  a myriad of function for such a small device. 

The VX armor looks like a small chip less than a millimeter cubed in size and is placed by the users ear. Upon placement the implant's legs enter the users ear through the ear canal into the brain and uses nanoprobes to repair the entrance. As such it cannot be seen.  A small auto-injector-like device is included for extraction if needed. Ejection of the device via special commands is forceful and removal would be require medical care  following this. Such is stated on the emergency removal kit "Warning: Emergency use only. Seek immediate medical care upon use.". Delta Force agents are issued VX armor; other versions of the armor with less features are provided to other government personnel and for civilian use.

Protective support:

-Laser and phaser weapons have greatly reduce effectiveness rendering them nearly useless

Medical support:

- Constant monitor of user vital functions

- Limited control of the bodily functions to boost self healing via nanobots

-Monitors users for invasion by foreign bodies

-Emergency stasis mode for critical injuries

-Limited protection in vacuum environments ( it cannot create oxygen )

Tactical support:

-HUD (heads up display) for weapons. Ammo capacity, range finding, aiming assist

- Assistive optical sensors  for night vision, UV, and infrared bands

Computer support:

 -Commlink function

-Networking capability

-Limited tricorder functions