This specially designed Xtreme head is capable of AC or DC power making it the perfect choice of photographers on the go. The battery pack output power is a safe and workable 12 volts, but still offers 100 flashes at full 150 watt/ second power. Utilizing AC power, this is also perfect choice for studio work giving you the best of both worlds. This kit consists of 1 Stellar 150 watt/second AC/DC Flash Head, 1 COR751 Light stand and 1 Stellar Xtreme 300 watt/second Battery pack.