Peace of mind that can be used for a long time just by soaking it in water in an emergency It is a disaster LED light that can be turned on in 2 seconds and turned on for up to 10 hours if it is immersed in water or other liquids, and can be re-lit if it is soaked in water again. feature ・When soaked in water, it lights up in 2 seconds and lights continuously for up to about 10 hours. ・When the light becomes dark, soak it in water again and turn it on again (up to about 168 hours after opening) ・Tap water, juice, water mixed with mud, and bodily fluids such as urine and saliva can also be lit. ・While in a vacuum package, it can be stored for 2 years. ・ 3 LED lights provide sufficient brightness for a long time. ・ It is compact and does not get in the way even if multiple pieces are stored. ・ Because it is light, even children can continue to hold it. ・Mercury-free air batteries and paper shells are made of sugarcane and do not use harmful substances, and can be disposed of as non-combustible waste. ・ It can be placed vertically or horizontally, or carried around the neck.