I think the total thickness is at least 8 mm. But that's just my feeling.

I previously tried to contact Invicta technical support, but they answered me that they did not know the exact thickness, which is very strange since you already indicated above, they sell spare parts, including crystals.

By the way, I forgot to thank you for the excellent review of not ordinary watches.

Hello Eric,

According to your post the thickness of the crystal for Invicta Hydromax watch is 4 mm. Is it true? I thought its thicker than 4 mm.