The gadget can grill, bake, fry, defrost and steam using a halogen light as heat.

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But new LEDs use just 12% and can produce light of similar quality to warm halogen bulbs.

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After only a few minutes, the lights of the Lamanai Outpost faded into velvety darkness and the only light was a brilliant shaft from the halogen lamp at the front of the boat.

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The 60W is the latest old-fashioned light bulb to be switched off in favour of the fluorescent lamps, energy-saving halogen bulbs and LED lights.

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