Mechanically powered flashlight - Wikipedia
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The three LED super bright dynamo squeeze action rechargeable flashlight requires no batteries! For being so little this guy is powerful. The 3 LED's encased in the main housing can put out a 15 lumens of brightness that will shine as long as you need it too.
3 LED Dynamo Squeeze Action Rechargeable Flashlight - No Batteries
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Mechanically powered flashlight - Wikipedia
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Mechanically powered flashlight - Wikipedia
ASR Outdoor Emergency Motion 3 LED Dynamo Squeeze Action