Today we uncover the fourth secret feature of the new DEEP dive watch!

Sapphire crystal in 3 different versions (Flat, Bubble- oder Superbubble)
All tree versions are made of ultra scratch-proof and almost undestructible sapphire crystal, with a hardness of 9 on a scale from 1 to 10, surpassed only by a diamond with a hardness of 10.
Compare this to standard watch crystals which have a hardness of 6.5.

Next week we will remove the last piece of the puzzle and lift the last secret feature of the watch. Mark your calendars for the full drop!