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Features:

• DTS-31N is a high-performance military head mounted night vision binocular with reference to pvs-31, an active head mounted night vision binocular in the United States. 
• DTS-31N has the characteristics of super large field of view, high definition, no distortion, light weight, high strength (the overall performance is much better than the original version of the U.S. military products), which is the ideal choice for military night equipment.

Specifications：

• Model: DTG-31N
• Structural mode: Arbitrary turn it over
• Rollover detection: Automatically detect and power off when turning up
• Battery type: Lithium battery (cr123Ax1) / cr23x4 external battery box
• Power supply: 2.6-4.2V
• Installation: Head mounted (standard American helmet interface)
• Control mode: ON/IR/AUTO
• Over power consumption: <0.1W
• Battery capacity: 800-3200maH
• Battery life: 40-100H
• Magnification:1X
• FOV(°): 50 +/-2
• Parallelism of optical axis: <0.1°
• IIT: gen2+/gen 3
• Lens system: F1.18 22.5mm
• MTF: 120LP/mm
• Optical distortion: 3% Max
• Relative Illumination: >75%
• Coating: Multilayer broadband coating
• Focus range: 250mm-∞
• Focus mode: Manual focus facility
• Distance of pupil: 30
• Eyepiece aperture: 8mm
• Visibility range: 0（+/-5 optional）
• Eye spacing adjustment: Arbitrary continuous adjustable
• Eye distance adjustment range: 50-80mm
• Eye distance locking method: Manual locking
• IR: 850nm 20mW
• Operating temperature: -40--+55℃
• Relative humidity: 5%-95%
• Environment rating: IP65/IP67
• Dimensions：115X105X85mm   115X178X58mm
• Weight: 460G (without battery)