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SRPE GMT Mod Parts for a 38mm GMT Build
Everything here goes into turning a Seiko 5 SRPE, or one of our SRPE replacement cases, into a 38mm GMT: the movement, the GMT hand, a bezel and chapter ring with GMT markers, and the crystal to use with the NH34.
The NH34 GMT Movement
The Seiko (TMI) NH34A GMT automatic movement: hand-winding and hacking, 21,600vph and 24 jewels, with a grey movement spacer and one uncut stem. It's sold unregulated.
GMT Hands
GMT hands for the NH34 and 4R34 movements, in Sub style, EII, SBGE style, BB Pro style, SNR025 style and Snowflake. Most come in several colours with C3 lume.
GMT Bezels & Chapter Rings
- Bezels: SRPE GMT bezels with GMT markers in brushed steel or brushed black, and a brushed black pilot bezel, each in 316L steel with the glass and bezel gaskets pre-installed.
- Chapter rings: GMT markers in black and white, blue and white, blue and red, black and red, or orange and black, 27.5mm inside and 32.7mm outside.
The Crystal
With an NH34, use the SRPE double dome sapphire crystal. The GMT bezels and our SRPE replacement cases both call for it.
Frequently Asked Questions
What do I need to build an SRPE GMT?
The NH34 GMT movement, a GMT hand for the NH34, a chapter ring or bezel with GMT markers, and the SRPE double dome sapphire crystal, which the GMT bezels call for with an NH34.
Do the GMT hands fit the 4R34?
Yes. Every GMT hand here fits the NH34 and 4R34 movements.
Which crystal do I need with an NH34?
The SRPE double dome sapphire crystal.
How big is the finished watch?
The GMT bezels and chapter rings are made for a 38mm GMT build, the size of our SRPE replacement cases.
Browse the SRPE GMT mod parts above to start your build.