COB stands for chip-on-board, a type of LED technology that is being used in more and more lighting products. A COB light is built with multiple LED chips arranged together on a single board, creating a compact and energy-efficient design. This technology can help prevent a COB flashlight from experiencing excessive hotspots while also producing a wider and more even beam compared to traditional LEDs. This makes a COB flashlight useful for lighting up larger areas. Many flashlights that use COB technology place it on the side of the device instead of using it as the primary beam.