Buy on Amazon.com : http://www.amazon.com/gp/product/B007IHTKVI?tag=catfoodrevi0a-20 <br /> <br />Square Perfect 400W/S SP400A Strobe / Flash Head Photography Studio Lighting <br /> <br />Power Input AC110-130 volt 60 Hz <br />Flash Power 400ws joule in full <br />Color Temperature 5300K <br />Flash-tube Lifetime over 10000 typical flashing <br />Power Setting 18 to full continuously