A high-quality 400ws AC-powered studio strobe that is easy on the budget: The SK400II. - Bowens mount - Built-in Godox 2.4G wireless X system receiver - 150W modeling lamp adjusts from 5% to 100% with a proportional mode - Precise output displayed on LCD panel. 40 steps from 1/16*1/1 - S1 and S2 optical slave system Specifications: Model: SK400II Max. power: 400Ws Guide No.(m ISO 100): 65 Color temperature: 5600+/-200k Power output control: OFF, 1.0~3.0?1/8-1/1) Power source: AC current Modeling lamp: 150W Modeling lamp level: 9 levels(L1 to L9) Rycle time: 0.4-3s Triggering method: Sync cord, test button, slave triggering, wireless control port Flash duration: 1/2000 to 1/8000s Fuse: 5A Package size: 44 * 27 * 21.5cm / 17.3 * 10.6 * 8.5in Package weight: 2871g / 6.33LB Package List: 1 * Flash 1 * Modeling Lamp 1 * Standard Reflector 1 * AC cord 1 * User Manual(Chinese&English)