Sapphire crystal (glass) for a Seiko SKX007 or 009 can make a £200 look like it's worth £2,000 for less than £30. The double dome sapphire crystal with blue anti-reflective coating is our best seller and is a must-have for any serious SKX wearer.
Changing the Hardlex crystal for a sapphire gives you the peace of mind that you'll really struggle to scratch the sapphire. It looks so much better. It looks like a watch that costs 10x more than it really is. It adds that something special to what is already a very accomplished diver's watch.