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I would guess it's a carbide lamp as it was in former times used by mining workers and is still used in speleology (caving) sometimes. The basic working principle is a box with carbide and a water reservoir from which water slowly drips onto the carbide. Carbide and water chemically react and form acetylene gas which is guided through a hose to a small ...


The UltraFire product is manufactured by WhaFat Technological Company, which is based in Hong Kong. Their products look very similar to SureFire flashlights, so it's possible that UltraFires themselves are clones/knockoffs. That said, the WhaFat website recommends purchasing from an official dealer, but they don't mention any. ultrafire-shop.net claims to ...

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