Night vision monocular goggles WIFI gen3 helmet night vision binocular 940nm Wifi infrared digital trail camera. Only the NVG20-2 combination includes the bracket, the rest of the options do not include the bracket. Difference between NVG20 and NVG10. 1, the horizontal field of view is 40 °, which is 2 times more than NVG10 (20 °). 2, the eyepiece is 7mm larger than NVG10 for 23mm, easy to observe. 3, the glass are military glass, higher level than NVG10, better observation. 4, depth of field than NVG10 large, 5 meters without adjusting the objective lens (NVG10 depth of field is ...