Recent testing has shown that gaseous emissions from defective batteries may cause a minor explosion of the Saxo Aqua, presenting a risk of injury to the user.
A gas absorber (catalyst) installed in the bulb holder can eliminate this risk.
See here:
http://www.petzl.com/petzl/statique/popup/EN/saxo_aqua_recall.htm
I hope my Arc wont have that problem.
