Pixel Sonnon DL-912 LED Video Light Cameras Camcorders Pioneering FSK2.4G wireless group synchronization with wireless brightness adjustment. Durable Digital switch for a 28 level brightness adjustment. It can ensure uniform gradual change without any vibration. Multiple power supply option; supports AA battery, Li-ion battery, DC7-12V input. We use a no-heat LED technology and a constant current circuit design to ensure consistent output, and an accurate light source in all environmental conditions. High brightness LED bulbs with accurate and stable color temperature, high color rendering index, and low power consumption.