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gjakal bothlamps have a total of 18000 lm. so each one separately will have 9000 lm. if you do the conversion using the formula: V (lm) = P (W) η (lm per W) i.e. lumens = watt (lumens per watt), you will find that 9000 lumens correspond to 100 watts

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gjakal batteryincluded. Simply, it worked for me for a semester and then it broke! it just doesn't work! waste of money for this one!

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