Our Pressure test:
Our Subtest:
Sapphire glass is a super dense, super scratch-proof type of glass: however it is important to check its water resistance.
We check against:
- for our Lady/Sapphire vintage watches: up to 3-5 ATM
- for our professional sportive watches: up to 10 ATM
Feel free to contact us for any specific question related to the subtest of a specific watch.