NMK312 - SKX/SRPD Domed Sapphire Crystal for Sloped Inserts (NH34 Compatible)



You can now build GMT mods without worry of hands stack clearance issues! This NMK312 SKX/SRPD Domed Sapphire Crystal for Sloped Inserts (NH34 Compatible) is designed to fit the new Seiko NH34 GMT Movement perfectly and will work on any SKX007/SRPD OEM and aftermarket cases, regardless of whether the case is compatible with NH34 movements. 

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.

Fits all our SKX007/SRPD Sloped Inserts.

Note: This crystal must be installed with the included NH34 Crystal Gasket, if you require more Crystal Gaskets as spare parts we do sell them separately here. Check out our NH34 Collection to view more products that are compatible for NH34 GMT Builds!



Cases: Compatible with all SKX007/009 and SRPD OEM and aftermarket cases. Movements: Compatible with NH34, 4R34 movements

Free International Delivery
  • Your order of S$50 (or equivalent in your local currency) or more gets free standard shipping, and orders above S$200 is eligible for free express shipping! Shipping costs will be automatically deducted at checkout.

Customer Reviews

Based on 643 reviews
Michael (Perth, AU)
NH34 crystal

Easy install. First time using this style, and had to seek Keith’s advice who replied promptly and put me on the right track.
Excellent experience

James W. (Wolverhampton, GB)
Excellent Crystal

Great quality crystal purchased for my first SKX mod. The blue AR gives a lovely finish on the crystal is beautifully clear and very high quality. A superior upgrade from the standard Seiko Hardlex.


its very beautiful, cant wait to see it installed on my watch

OWO (Singapore, SG)

Crystal comes with a little white protector. Great One.

Anwar P. (Toronto, CA)

NMK301 - SKX/SRPD Double Domed Sapphire Crystal