Ringflashes are famous among Fashion and Beauty Photographers for their seemingly shadow-free illumination, specular highlights, and distinct catchlights.
The light is on-axis and creates an even light source that has defined shadows that give amazing depth to an image.
What set's the Godox Wistro AR400 apart from it's competitors is it's built-in changeable Lithium Ion Battery, that offers 450 full power flashes at 400 w/s
The Wistro AR400 offers 22 steps of power adjustability from 1/1 to 1/128th power and recycle times from .05 - 2.8 seconds. The unit is also capable of HSS from 1/1 to 1/32nd power.