From Armasight about Venom Gen 1+ Night Vision Goggles:

Armasight Venom Gen 1+ Night Vision Goggles are one of the most up-to-date devices that offer great performance at an absolutely affordable price range. These high quality night vision goggles are perfect for air soft games including paintball, and also a great finding for hunters and professional security officers who need to see well at night. This unit comes complete with a head mount and thus it can be easily placed over either eye. Such a hands-free option makes Armasight Venom Gen 1+ Night Vision Goggles very convenient, especially in complete darkness, and with a high viewing range. As for the structure, these goggles are great due to the all-glass optics, and a single, switch control.

Each Armasight Venom Night Vision Goggle come with:

Goggle-Kit
Packing Box
Soft carrying Case

From Night Vision Guys about Armasight Venom Gen 1+ Night Vision Goggles:

Not unlike the well known ATN Viper night vision goggle, Armasight Venom is a super compact gen 1 night vision mono-goggle. This unit certainly has its limitations. However, with the included goggle kit and the compact size, it also has lots of uses. If you are in the market for a starter night vision monocular which can also be headmounted for hands-free operation, Armasight Venom is a solid option.

IIT Generation	1
Magnification	1x
Lens System	F1.4, 35 mm
FOV	20°
Range of Focus	0.25 to infinity
Diopter Adjustment	-5 to +5
Controls	Direct
Infrared Illuminator	Yes
Battery Life	up to 58 Hrs
Environmental Rating	Weather and fog resistant
Operating Temperature	-40 to +50 °C
Storage Temperature	-50 to +70 °C
Dimensions	145 x 95 x 48 mm / 5.7 x 3.7 x 1.8 in
Weight	0.3 kg / 0.65 lbs
Warranty	2 Years

Compact and Lightweight
Designed for Hand-Free operations
High resolution Gen. 1+ Image Intensifier Tube
Built-in Flood infrared illuminator
Fully adjustable headgear for ultimate comfort
Flip-Up headgear
Special design which allows the unit to be positioned over either eye
Can be used in conjunction with long-range IR Illuminator
Water and fog resistant
Limited Two-Year Warranty

Gen 1 Night Vision

1st generation is currently the most popular type of night vision in the world. Utilizing the basic principles described in detail in our guide, a 1st generation unit will amplify the existing light several thousand times letting you clearly see in the dark. These units provide a bright and sharp image at a low cost, which is perfect, whether you are boating, observing wildlife, or providing security for your home. You may notice the following when you are looking through a 1st Gen. unit. A slight high-pitched whine when the unit is on. The image you see may be slightly blurry around the edges. This is known as Geometric Distortion. When you turn a 1st Gen. unit off it may glow green for some time. These are inherent characteristics of a 1st Gen. unit and are normal.