This is a set of two COB LED headlamps. COB lights are diffused, illuminating the surroundings brightly. LED lights are spot-type, focusing on a single point. They are very lightweight, so they won't cause your helmet to slip even when attached. Note: The product description states a full charge lasts 4-6 hours, but in actual use, it seemed to last less than an hour on high. Maybe about 30 minutes at best. I haven't tested it on low yet. COB and LED spot lights cannot be used simultaneously. The switching sequence is LED → COB → off. Brightness can be adjusted by long-pressing the switch. They can be detached and used as handheld lights. There's a magnet on the opposite side of the switch, so they can also be used as work lights. When using continuously, it might be better to use them while charging. Alternatively, since it's a set of two, you could use one and charge the other, swapping them out when the first one gets dim. Charging: Red flashing Charging complete: Red solid They will be shipped via Yu-Packet Post Mini, so the contents will be removed from the box, and the box will be folded and shipped with them. Type...LED light...COB light Brightness (lumens)...300lm Features...Rechargeable, Dimmable