Really useful in practical use. I use 2 lights and the shooting and find why the IR remote control handy mainly when I'm working with Accu. Yongnuo power supply for LED Lighting YN-600 YN-168 is not relevant. I have acquired with the two lamps 2 aluminum case of type Bilora Alu Case I, 546, because no container transport is included. Luminosity really comparable to genuine halogen lamps film.