Omega constellation 2500 back penetration

Difference between Omega Back Wear and Non-back Wear

The difference between the two styles lies in the transparent chassis and waterproof performance.

1, transparent chassis: Omega's through-back design allows the wearer to clearly see the mechanical structure inside the watch. This design not only increases the appreciation. Without a transparent design, you can't directly see the internal structure of the watch.

2, waterproof performance: Omega is opaque in design, so there is no need to worry about waterproof problems. The back-penetrating design needs to expose the movement and dial through a certain number of gaps, and can see through the internal mechanical movement. These gaps will become channels for water vapor to penetrate.