Ever use a Lightcap Water Bottle?

[mom2boys]

Leave this flashlight on all night without worrying about running down the batteries. A waterproof solar panel, battery pack and powerful LED light are sealed into the lid of this 32 oz. bottle, allowing the battery to charge while you hike. At the end of the day, fill up the bottle with water and turn on the white bulb for reading or the superefficient red bulb as a nightlight. The LED shines down into the water for evenly dispersed illumination...

Do they really work? How well? Would you recommend them?

 

[Dan Murphy]