The T4c can be operated using the included multi-voltage AC power supply, or the included custom battery grip, which securely locks into place on the end of the tube and provides hours of continuous use at max output. The amaran T4c is made for photographers who need a 4' linear lighting solution with full-color control, battery-operability, and intuitive mounting options. The optical and linear design of the light is suitable for in-camera practicals, soft wraparound light, or as an accent light when shooting people or products. The RGBWW chipset provides you with full control over the output and can easily add a splash of color to a scene.