Hello, It is a common question for you guys but very important for mr who is a beginner in the Omega universe: is the movement 8400 in-house or ETA based? I spent many time in researches but I still do not what / who believe? I also read the movement 8400 is specifically developed and produced by ETA for omega. As a consequence, both brands belonging to the Swtach Group, do I have to deduce from the previous statement that none of the Omega movements is in-house but ETA-based or specifically developed by ETA for Omega? Thank you for your answer!