WH20- pocket low-light level night vision device /goggles
Specification:
The max observation distance: 100-120m (ambient light illumination 10-2Lux)
Magnification times: 2x
Field of view: more than 18 degree
Objective focal length: 50mm
Objective aperture: 40mm
Diopter adjustment: 0.5m∞
Field of view range of adjustment: -4+4D
Supply voltage: 3.0V
Battery model: Two AA batteries
Weight: 0.5Kg
Infrared lamp: Internal placement (effective visual distance: 15-25m)
Protection from glare: automatic protection from glare