The revolutionary ION Light is powered by ionization of salt water and metallic plate, no batteries required. Just mix any table salt and water (or use seawater if near ocean) pour into ION Light and you have illumination! Environmentally friendly (no toxic batteries to dispose of), safe (no fire hazard), reliable and easy to use. Must have for preppers, campers and those who live off-grid or in area with unstable electricity supply. Unlike solar powered lights, ION Light is not subject to weather conditions. No need to worry about storing or rotating batteries. Every household should have ION Lights.