Upgrading your crystal from stock Hardlex glass to a premium Sapphire Crystal is a great first mod for your Seiko 5 Sports SSK GMT watch. This NMK353 SSK Flat Sapphire Crystal is designed to be the perfect replacement if you like the original flat Hardlex and using a flat bezel insert but want to upgrade it to a much higher quality sapphire crystal.

Our sapphire crystals have Anti-Reflective (AR) coating at the bottom side of the crystal. The AR coating comes in two colours - Blue and Clear AR.

Comes attached with 1pcs SSK Crystal Gasket. Need additional SSK crystal gaskets? Pick them up under Add-Ons above to ensure you have everything you need for a smooth upgrade!

Fits all our SKX007/SRPD Flat Inserts.