The MS200 (200Ws) with guide number 174' and 5600K daylight-balanced studio flashes are lightweight, compact and durable flashes with comprehensive functions. Designed for studio photography, portrait, and still life photography, the studio flash cab be used as a background light or fill light source. MS200 offers solid core and convenience features at a budget-friendly price point. The head features a 0.1-1.8 second recycling time with flash durations as short as 1/2000 second. Power is variable from 1/32 to full power, adjustable in 50 steps, while the 150W modeling light is adjustable from 5 to 100% to allow you to preview your lighting effects.