5x50night vision binocular II  | 
           
         
        
          
             
                    
                    RG88  | 
           
         
        
          
             
                    
                    RG66  | 
           
         
        
          
             
                    
                    RG55  | 
           
         
        
          
             
                    
                    5X50 night vision binocular  | 
           
         
        
          
             
                    
                    RG77 6X50  | 
           
         
	
		 | 
      | 
    
       | Lens magnification ,x   | 3 | 5 |  | 0bjective lens diameter, mm | 44mm | 50mm |  | Lens system | 59mm  F1.2 | 88mm  F1.7 |  | FOV at distance 190m/200yards, m | 197/60 | 138/42 |  | Focus range, yards | 1.5 to infinity | 1.0 to infinity |  | field of view ,degree | 30 | 18 |  | Eye relief, mm  | 15 | 15 |  | Exit pupil diameter, mm | 6 | 6 |  | Eyepiece Dioper adjustment, dptr |  +4/-4 |   +4/-4 |  | Overall dimensions, L×H×W, mm  | 180x80x50 | 200x80x50 |  | Weight, g | 310 | 460 |  | Power supply, v  | AA battery (one  by 3.6V) | AA battery (one by 3.6 V) |  | Battery life IR off,   | Up to 70                                 | Up to 70                                  |  | Battery life IR on, | hour Up to 20 | hour Up to 20 |  | Effective Distance |   |   |  | Detection range, m    | 200/150 | 220/175 |  | IR power, mw  | 25≤ | 25≤ |  | IR wavelength, nm  | 850 | 850 |  | IR effective distance, m | 25 | 25 |  | Environmental Data |   |   |  | IP standard of water-resistance | IPX4 | IPX4 |  | Humidity,% | 93 | 93 |  | Operating temperature, ℃ |  -30°to+45° |  -30°to+45° |  | Storage temperature, ℃  |  0°to+60° | 0°to+60° |  
    
   
  
                                        
 |