What movement is Omega 1304.35?

1304.35 is a gold-inlaid automatic mechanical men's watch of Omega constellation series, which adopts the self-winding movement certified by Omega 1 120 Observatory. This movement is modified from ETA 2892A2, which is a common Markov escapement and non-coaxial escapement. The durability is quite good, and I personally feel better than the 2500 movement.