This is for a kit of four Aputure MC battery powered LED lights. These lights are fully color tuneable and include both daylight and tungsten LEDs. Mount the lights using a baby pin w/ 1/4" thread, or you can utilize the light's magnetic backing to quickly slap them on a metal surface. Each light has a two hour run time at full brightness. The included charging case allows you to wirelessly charge all four lights simultaneously. You can even control these lights from your phone using Aputure's Sidus Link app!