LILLIPUT 668GL-70NP / H / Y 7 "HD field on camera for a DSLR Monitor with HDMI YPbPr and Composite Input (Electronics)
Okay, does the job. The menu is simple and fast. However, I regret a little the color of the screen that is not very faithful to that of the Reflex LCD (Canon 6D for my case), but simple small adjustments in the menu will solve the problem.
