What's the difference between the old Omega constellation and the new one?

The new Omega constellation is 38mm in diameter, while the old one is 36 mm.. The main difference between the old model and the new model is that the movement has been updated, and the old model adopts 2500 movement, which has not solved the phenomenon of stealing stop. The new model adopts Omega 8500 movement, equipped with coaxial escapement, clockless spring, double rollers and bidirectional automatic winding to reduce the winding time. The deck and swing components are decorated with ripples in Geneva, Arabia, which can store electricity for up to 60 hours.