Water-Activated LED Lights | Magnesium Battery Emergency Lamps for Survival & Science Experiments
Lights up instantly when dipped in water — no batteries required
Uses magnesium and saltwater reaction for power
Lightweight design (only 30g)
Up to 72 hours of continuous illumination
Perfect for camping, survival kits, and STEM experiments
2. How It Works
When the magnesium strip contacts water, it triggers a chemical reaction producing electricity — powering the built-in LED. Simply dry and store after use.
