From Armasight about Vulcan 3.5-7X Night Vision Riflescopes:

The Armasight Vulcan scopes represent the apex for the night vision weapon sight technology. Image Intensifier options ranging from Gen 2+ White phosphor Quick Silver, Gen 3 white phosphor Ghost and mil-spec Gen 3 Pinnacle. New optical design forms industry standards and significantly more compact. The Vulcan comes with 2X magnifier that allows user to go from 3.5X to 7X system in seconds. Host of features including wireless remote control, ability to use either CR123A or AA battery and quick release Picatinny mount with locks. Small on dimensions, but big on value – the Armasight Vulcan will not unbalance your rifle; it mounts on an adjustable mount that will fit weaver or Picatinny rails, and can be mounted in seconds without tools. The Vulcan has multicoated all-glass lenses and an internally adjustable fine reticle that makes precise shot placement incredibly easy. This night vision riflescope is also water, dust and sand proof for increased reliability. Complete with tactical rails for lasers or illuminators (high power IR illuminator included as standard), the Armasight Vulcan is ideal for the predator hunter, tactical marksmen, or anyone that needs a compact and light night vision riflescope.

From Night Vision Guys about Vulcan 3.5-7X HD MG (NRWVULCAN329DH1) Night Vision Riflescopes:

Armasight Vulcan is a high end night vision rifle scope available in multiple magnification configurations.  Armasight is offering something that has not been done before in night vision rifle scope space.  Instead of limitting customers to a fixed magnification, Armasight includes a 2x A-Focal lens which can be attached in seconds to double the magnification of your Vulcan scope.  This is a very convenient feature and is available on the Vulcan 2.5X and Vulcan 3.5X scopes.  Naturally your field of view gets reduced when the magnifier is attached, but it is a great option to have for those extra long range shots.

In 2014 Armasight expanded their line of Vulcan night vision riflescope models and options.  4.5X model was added as well as supportf or the full array of night vision tube generations.  This means that you can pick a Vulcan scope to match your exact need to the dot.  With the above described versatility in combination with excellent build quality and ergonomic design, Vulcan line of night vision scopes is sure to be the leader in this space.

All Armasight Vulcan 3.5-7X night vision rifle scopes ship with these included accessories:

• 2x Afocal Lens
• Remote control
• Battery adapter 1x CR123A 3V / 1x 2AA 1,5V
• Instruction Manual with Warranty Card
• IR850 Detachable Long Range Infrared Illuminator
• Lens Cap
• Lens Tissue
• One Lithium Battery CR123A
• Packing Box
• Soft carrying Case

• Wireless Remote Control to turn the unit on/off
• Shock protected, all-glass IR transmission multicoated optics
• Bright light cut-off
• Illuminated reticle with brightness adjustment
• 2x magnifier is included
• Detachable long-range infrared illuminator
• Waterproof design
• Powered by a single CR123A Lithium or AA battery
• Low battery indicator
• Quick release mount
• Mounts to standard weaver rails