Going a bit off topic here, manged to lose both lenses on my PARD NV007 the other evening, just fitted a rifle rack on the quad and strapped the rifle in, set off around the silage which had just been cut. Pard was attached to the rifle but realised there was more than enough light so took it off and put in in the pouch.
Checked the battery yesterday only to find the vibration had caused both the IR illuminator and the camera lens to come off, far too much vibration when strapped to the quad and that was driving around slowly, so be careful and check the lens on yours as they seem to be a loose fit.