Model:2* SK400II With Built-in Godox 2.4G Wireless X system,SKII series is a cost-effective compact flash strobe 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 150W modeling lamp adjusts in 5% to 100% power levels Outstanding output stability, no more than 2% shifts when under the same output Compact and lightweight body with Bowens mount to add almost any studio light shapers Precise output displayed on LCD panel,40 steps from 1/16-1/1 SK400II Studio Strobe Light Model: SK400II .