Too bad I bought two of these, will order another one later. Excellent light unit. I saw someone on YouTube talking about these lights and wanted to try it. This works better than I had hoped. You can adjust the brightness and temperature of the light. There was no battery or power supply included. At the moment I am powering the light with the power transformer that comes with one of these LED strips. These transformers are normally 12 VDC and have the same plug as this light. Maybe later I'll buy some batteries and another power transformer. I intend Use this flashlight mounted on a tripod and illuminate small objects for photography. Let's see how it works with one of these white nylon photo booth cubes. I am very happy with my purchase. This is the power supply I use. Блок питания HitLights мощностью 24 Вт (2 А) 12 В постоянного тока для светодиодных лент, внесенный в список ULL, драйвер трансформатора от 110 В переменного тока до 12 В постоянного тока для светодиодных ленточных светильников и других устройств с низким напряжением (системы безопасности, камеры etc.)