This is a high quality russian night vision / residual light amplifier Pulsar Challenger GS 1x20 Generation 1.
The night vision has a special designed R-Contact Optics and a special CF-Super intensifier image tube.
The result of this exclusive technological development is the highest edge to edge resolution performance ever seen in a budget consumer NV product.
You can compare the image to some Gen.2+ night visions.
The night vision has a new five lens eye-piece that minimizes distortion on the edges of the field of view and increases sharpness and contrast of the image.
The night vision is protected against water and dust and has a IR - illuminator for a view at complete darkness.
Features of the Challenger 1x20:
Lens diameter: 20mm
Magnification: 1x
Resolution (center/edge FOV): 42/36 lines/mm, min.
Angular field of view: 40 degrees
Max. Detection Range, normal nighttime conditions (quarter moon): 100 -150m
Eyepiece adjustment: +/- 4 diopter
Exit pupil: 6mm
Eye relief: 12mm
Operating voltage: 3 Volts (1 x CR123 battery)
Tripod mount: 1/4 inch
Operating temperature: -20 C to +40 C (-4 F to 104 F)
Degree of protection: IP code IP46
Dimensions: 163x79x57
Weight of the unit: 0,3kg
Tube generation/type: CF-Super/EP-33-SF-U
The night vision will be delivered with carrying bag.