The Blackout Buddy H2O portable LED emergency light is from Eton company in the United States. Emergency light, size is only 6.5 x 3.4 x 1.5 cm, weight 23 g, is only as big as a white box, the size of a cigarette lighter with three LED bulbs. H2O doesn’t need rechargeable emergency lights, all you have to do is just to add water.
H2O emergency lights don’t need to be plugged into electricity socket, also do not need to lithium batteries, activated by water. You can put it in a glass of water, or to the battery compartment water, H2O emergency light will be lighted. Adding water, it can be lighted for 72 hours.
Officials say, H2O emergency light can hold more than 10 years and do not affect its performance. When you need to take it out with a glass of water can make it work.