List of Godox SK400 II Studio Flash Kits Details of the Godox SK400 II Flash Strobe: * 2 Stands (2m) * 2 Softboxes (60x90 cm) * 2 Triggers * 1 Studio Bag Flash Head Guide Number 213' / 65 m at ISO100, Maximum Power 400 Ws Recycle Time: 0.1 to 1 seconds; Flash Duration: 1/2000 to 1/800 seconds 5600K ± 200K Color Temperature Flash-Ready Visual Reflector and Audio Indicator Adaptable Accessory Modeling Light Type: Tungsten; Fitting Type: Bowens S; Wattage: 150 W; Control Modes: Cable, Optical, Radio, Free Set, Off, Proportional Sync Sync Type Button Indeed, a built-in wireless receiver Wireless Channels 2.4 GHz Wireless Frequency Bands 32 Groups of Wireless 16 LCD Fan Cooled General Display No Dimensions Including handle, H: 23.2 x W: 12.7 x L: 38.0 cm