... Introduction Travor Brand RF550 Series Marco LED Ring Flash is specially designed to use in the field ... and lower static power consumption 3. The left flash and right flash function makes objects appear more dimensional.4. ... ,58mm,62mm,67mm,72mm, 77mm8. Four colors of flash diffusers for alternative use orange,blue, oyster white, ... 000 grips, 5,000 solutions and 5,000 flash lights every month.