Add punctuation: Not to mention the turquoise
A: Not to mention the turquoise.

Add punctuation: The watch is water resistant to 20 ATM and has been fitted with sapphire glass
A: The watch is water resistant to 20 ATM and has been fitted with sapphire glass.

Add punctuation: Secondary osteoarthritis is caused by another disease or condition
A:
Secondary osteoarthritis is caused by another disease or condition.