UKH

The latest additions to Brunton's high-yield lithium power pack offering are the Revolt 4000 and Revolt 9000 XL. Both have been built for tough outdoor use and are shockproof and weatherproof [IPX5-rated debris and waterproofing].

Read more at http://www.ukclimbing.com/gear/news.php?id=6755

In reply to UKC Gear:

"IPX5-rated debris and waterproofing" - perhaps someone more knowledgeable than me can explain how this rating signifies it is debris tested?

In reply to Matt_b:

IPX5 - Protected against dust + water from a hose.

Cannot be immersed etc.
Cheers
LD