*Godox SK400II Speedlite Monolight has a Large LED Display, Precise Output Displayed on LCD Panel, 40 Steps from 1/16-1/1. Auto Memory and Recovery of Adjusted Panel Settings *150W Modeling Lamp Adjusts in 5% to 100% Power Level, Outstanding output stability,no more than 2% shifts when under the same ouput ,Auto memory and recovery of adjusted panel settings. *Anti-preflash function enables synchronization with cameras that have a one- preflash firing system , Built-in heat elimination fan machine, overheat protection, effectively protect flash safety and extend flash life.The Voltage: 110V *Built-in Godox 2.4G wireless X system , Godox SK400II Flash Monolight is A Cost-Effective Compact Flash Strobe .With Godox 2.4G X system wireless transmission,Godox SK400II Flash Monolight is compatible with flash Transmitter Godox Xpro, X1,X2, XT32 or FT-16 flash trigger. 2.4G: 16 group, 32 channel *Using high-quality large capacitors to store electricity, 0.1-1.0s Fast Recycling ,continuous shooting does not wait, providing shooting efficiency. Godox SK400II Studio Strobe Monolight for E-Commerce Product Shooting, Portrait and Lifestyle Photography. In Small and Medium Studio Shooting, It Can Work as High Light, Background Light or Hair Light With a guide number of 213', the SK400II Studio Flash Monolight 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 0.1 to 1 second 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.