This is the coolest video light I have ever seen! This is truly a feat of engineering. It is a sturdy, aluminum-housed fully professional LED light about the size of an iPhone. It has variable color temperature from 3200 to 5600 K and variable brightness. But unlike other small LED lights, this one has a built-in battery so that the unit is fully contained. The battery has a long life: about 2 hours at 100% output, 3 hours at 50%, and 8 hours at 5%. And the battery is so robust, it is also designed to function as a power bank for phones or other devices.While these features are all very impressive, what really blew me away was the quality of the light. Despite the small size, it casts an even, soft light that can be very bright, or mild and gentle. It is really a miniaturized, full-featured LED lighting instrument. It is incredibly portable due to the built-in battery. And it has a great display on the back that shows remaining battery life and allows for accurate adjustment of color temperature and output. These lights are so good, you could use three of them and achieve an impressive three-point lighting setup comparable to larger, more expensive lights. But these can be used anywhere: inside cars, back alleys, wilderness. The entire light kit and accessories comes in a handy carrying case that can fit in your pocket. Amazing!