NMK301 - SKX007/SRPD Double Domed Sapphire Crystal


Upgrading your crystal from stock Hardlex glass to a premium Sapphire Crystal is a great first mod for your SKX007 or Seiko 5 Sports SRPD, especially if you intend to pair it with one of our sloped inserts. This NMK301 SKX Double Domed Sapphire Crystal is designed to have a small beveled edge which looks great with both sloped and flat inserts.

The double-dome design of the sapphire crystal ensures that your watch dial is visible at any angle with no distortion. It also has the added benefit of looking really, really cool.

Our double-domed 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.

Compatible with SKX007, SKX009, SKX011, SKX171, SKX173, SKX175 and Seiko 5 Sports SRPD Range.

Fits all our SKX Ceramic and Aluminium Sloped and Flat Inserts.

Also compatible with new SRPD Collection

5 Sports collection – SRPD55K3, SRPD57K1, SRPD59K1, SRPD55K1, SRPD55K3, SRPD57K1, SRPD59K1, SRPD61K1, SRPD63K1, SRPD65K1, and SRPD65K4

5 Suits collection – SRPD65K2, SRPD67K1, SRPD69K1, SRPD71K1, SRPD71K2, SRPD73K1, SRPD73K2, and SRPD75K1

5 Specialists collection – SRPD55K2, SRPD65K3, and SRPD76K1

5 Street collection – SRPD79K1, SRPD81K1, and SRPD83K1

5 Sense collection – SRPD77K and SRPD85K1

Customer Reviews

Based on 137 reviews
Double Domed Sapphire Crystal NMK301 for skx007

A great crystal I've been buying for a long time for my Seiko modding


The DD beveled sapphire crystal is very very nice. There is still a gap/edge with the ceramic bezel insert so go for the non beveled DD if that bothers you. Overall it makes my SRPD look stellar.

Double Dome Sapphire Crystal

Perfect fit quality crystal. All other mods on this piece also purchased from Namoki. Arrived quickly & packaged well. Planning to mod my SKX013 next using Namoki, highly recommended.

Awesome quality like always!

Perfect product!

Beveled double dome saphire

Love the distortion this domed crystal gives. Makes the whole face look deeper, while the beveled edge gives an added layer of reflection. Seamless curvature with sloped bezel inserts! I always get the blue AR. Best look and fit is always perfect!