The SK400II 2-Light Studio Flash Kit was put together by Godox for photographers who need to take studio-quality lighting on the road. The kit includes two SK400II Flash Heads, each with a light stand. A 23.6 x 35.4" softbox, two 40" umbrellas, a standard reflector, and an XT16 Wireless Trigger with a range of 328' are also provided. A hard, rolling kit case is included for storage and transport With a guide number of 213, the SK400II Studio Strobe from Godox is a 5600K daylight-balanced flash source that offers solid core and convenience features at a budget-friendly price point. The head features a 0.4-3 sec recycling time with flash durations as short as 1/2000 sec. Power is variable from 1/16 to full power, adjustable in 40 steps, while the 150W modeling light has a Proportional mode to allow you to preview your lighting effects and a Percentage mode that adjusts brightness from 5 to 100%. Settings are accessed via rear panel push buttons and displayed on the easy-to-read LCD screen. Triggering options include sync cord, test button, and slave triggering. The SK400II has a built-in 32-channel X1 radio system, making wireless function control possible with separate purchase of the XT16, FT16 or X1 TTL transmitter. The head also has an anti-pre-flash function that makes it easy to work with point-and-shoot and other cameras that employ pre-flash. The SK400II weighs in at 4.6 lb, encouraging the assembly of a kit with two or more heads without having to lug a heavy case around. The SK400II has a Bowens front accessory mount, allowing it to use Godox modifiers as well as accessories from the many manufacturers that use this system. The head has a tilting stand mount and runs on 100 to 120 VAC mains power The brain of the Godox wireless power control system, the shoe-mounted XT16 Wireless Power-Control Flash Trigger Transmitter provides remote triggering as well as up to eight stops of wireless power control for select flashes equipped with the XTR16 receiver. It features a reliable 2.4 GHz radio system with an impressive range of 328' along with a choice of 16 channels. Users can sync at speeds up to 1/250 second and there are multiple power control settings for working with speedlights or studio flashes. Additionally, it runs on two easy-to-find AA batteries With dimensions of 30.7 x 9.4 x 9.4", the CB-04 Hard Carrying Case with Wheels from Godox can hold a two or three-light kit with accessories, making it ideal for Smart, Mini Pioneer, and Mini Master series equipment. It has a similar design to that of travel suitcases, with inline skate wheels and a top handle that allow you to easily roll the bag along in smooth surfaces. For short distances, straps on each side of the bag can be connected via a detachable grip for simple hand carrying The case offers a spacious main compartment for holding most of the equipment, which closes via zippers to ensure everything stays safely inside. It features a zippered pocket on the interior of the lid for small accessories or everyday items. Finally, a clear window on the front of the bag allows you to insert a tag with your name or phone number for easy identification when travelling