The Awesomer is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more.
Hydra-Light Salt Water Lights
Hydra-Light lanterns and flashlights use a replaceable power cell that activates when exposed to saltwater (or water with dissolved salt). Dipping the power cell for just 10-15s gets you 100+ hours of light. There will also be Hydra-Light USB chargers.