Specifications Model:MS300 Max Power:300ws Guide Number(m ISO 100)(with highly effective reflector):58 Color Temperature:5600±200k Operating Voltage:AC220-240V(50Hz) Power Output:1/32~1/1(5.0~10.0) Power Consumption of Modeling Lamp:150ws Light Brightness of Modeling Lamp:5%~100% Recycle Time:220V(0.1~1.3s) Flash Duration:1/2000~1/800s Fuse:F8AL 250V Dimension:Flash diameter 12.6cm, height of flash with handle 12.7cm, length of flash with lamp cover 28.3cm Net Weight:Approx.