I saw this new Steripen Opti at the REI site and thought I would give you guys a heads up to all the steripen/solar travelers out there. The new opti has a built in optical sensor for the water and a LED flashlight as a backup light. It's always nice to carry a back up light and have a water purifier at the same time.And as usual, no affiliation to anybody anywhere.

http://www.rei.com/product/799003