Switronix Switronix TL-BT200 TorchLED Bolt On-Camera LED Light TorchLED Bolt features two knobs for controlling the 5-100% dimming of 3000K light and 6000K light. Once optimal color temperature is set, the on/off switch can be used to preserve the mixture of the two color-temperature sources Comes with a carrying case, a snap-on filter holder and one diffusion gel