Hopefully you never need to use these emergency flashlights, but they’re cheap enough today in Amazon’s Gold Box that you might want to stock up to prepare for an unexpected natural disaster. You’ve got three different models of American Red Cross emergency lights to choose from, and they all have pretty unique characteristics that make them worth checking out.

The Blackout Buddy stays plugged into a wall outlet, and automatically turns on using a built-in battery when it senses a power failure. From there, you can unplug it and use it as a flashlight for up to four hours. [2-Pack Blackout Buddy Flashlights, $12]

The Blackout Buddy H2O never needs to be plugged in; you activate it by dipping it in water. Yes, really. The catch is that after it’s activated, it’ll shine continuously for 72 hours, and then never light up again. Still, it might come in handy during a long power outage. [Blackout Buddy H2O, $14]

And finally, my personal favorite is the Clipray Clip-On Flashlight and Smartphone Charger. This one includes a hand crank to keep the light running, and also a USB port to charge up your phone. Obviously, you’re not going to fully charge a smartphone battery with this, but it could give you enough juice to make an emergency call. [Clipray Clip-On Flashlight and Smartphone Charger, $12]

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