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Nitecore P20iX USB-C Rechargeable LED Flashlight - 4000 Lumen - w/ Extra NL2150HPi Battery, Holster and USB Eco-Sensa Charging Cable Included - - Amazon.com
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![Luminous efficacy [lumen/watt] of all lights included in the test sample. | Download Scientific Diagram](https://www.researchgate.net/publication/228904625/figure/fig1/AS:341309635219456@1458385966148/Luminous-efficacy-lumen-watt-of-all-lights-included-in-the-test-sample.png "Luminous efficacy [lumen/watt] of all lights included in the test sample. | Download Scientific Diagram")
Luminous efficacy [lumen/watt] of all lights included in the test sample. | Download Scientific Diagram
LED Lumens To Watts Conversion Chart - The Lightbulb Co. UK
