Pure speculation, but since the IR is optional, it may be with and without.

Looks pretty tough. One strange thing on the <a href="http://www.homesecurity.co.il/pictures/he/documents/WV-SUD638_2A-167BA(2).pdf" target="_blank">sheet</a> is the dual ip ratings, is there a valid reason for this does anyone know?
<img src="https://ipvm-uploads.s3.amazonaws.com/uploads/9d2b/a126/IMG_0451.JPG" border="0" alt="" width="400">

Gizmodo Declares This Panasonic Camera 'Indestructable'

Gizmodo: <a href="http://gizmodo.com/this-indestructible-camera-will-be-the-only-thing-left-1782811345" onclick="window.ga('send', 'event', 'Permalink page click', 'Permalink page click - post header', 'standard');" data-id="">This Indestructible Camera Will Be the Only Thing Left to Record the Apocalypse</a>
<img src="https://ipvm-uploads.s3.amazonaws.com/uploads/c3d1/6ca8/pano-ind.jpg" border="0" width="502">
It's the <a href="http://business.panasonic.com/WV-SUD638.html" target="_blank">Aero PTZ Camera WV-SUD638</a>
Not knowledgeable enough with this segment to have an opinion. Any thoughts?