The MS Series Studio Flashes are lightweight,compact and durable flashes with comprehensive functions,Designed for studio potography,portrait and still existence photography,the studio flash can be utilized as a background light or fill mild source Specifications Model:MS200/MS300 Max Power:MS200 200Ws/MS300 300ws Guide Number(m ISO 100)(with highly effective reflector):MS200-53/MS300-58 Color Temperature:5600±200k Operating Voltage:AC110V-120V-60Hz/AC220-240V(50Hz) Power Output:1/32~1/1(5~10)Power Consumption of Modeling Lamp:150ws Light Brightness of Modeling Lamp:5% ~100% Recycle Time:220V(0~1)/(110V(0~1) Flash Duration:1/2000~1/800s Fuse:F8AL 250V Dimension:Flash diameter 12,height of flash with manage 16, length of flash with lamp conceal 28 Net Weight:Approx Note:X2T Transmitter has five models to your choice:X2T-C for Canon;X2T-N for Nikon;X2T-S for Sony;X2T-O for Olympus;X2T-F for Fuji Package included: 3 x MS Flash three x Power Supply Cord(US/EU/UK/AU Plug)3 x Lamp Cover three x Modeling Lamp1 x Standard Reflector1 x Barndoor with Honey Comb & Color Filters1 x X2T Flash Transmitter3 x 2M Light stand3 x 60x90cm Softbox1 x Carrying bag1 x 33" white soft umbrella (free gift)1 x 33" black & silver umbrella (free gift)1 x User guide