Seiko Mod Movements

About

7 Seiko NH automatic movements covering every mod build type: the NH35 with date, NH36 with day-date, NH38 with no date window, NH34 GMT, and three skeleton calibers — NH70 (silver bridges), NH71 (gold bridges), and NH72 (dark bridges). All share the same 21,600 bph beat rate, approximately 41-hour power reserve, and hacking plus hand-winding functionality. Every movement drops directly into all Nomods cases with no adapter or modification needed. Case compatibility: All seven movements fit every Nomods case — Seikonaut, Petrichor, Royal Oak 37 mm, and Royal Oak 41 mm. The movement diameter and mounting are standardized across the entire NH family. Dial pairing: NH35, NH36, NH38, and NH34 GMT pair with solid dials (index, waffle, sunburst). NH70, NH71, and NH72 pair with skeleton dials that have a cutout center to expose the decorated bridges. Watch out: Do not pair a skeleton dial with an NH35 or NH36 — the solid rotor plate underneath looks unfinished through the dial cutout. Similarly, solid dials will cover up the decorated bridges of a skeleton movement, defeating the purpose. Always match dial type to movement type. How to Choose Your Movement Date vs. no-date: The NH35 shows the date at the 3 o’clock position, which is the most common configuration for everyday watches. The NH36 adds a day display alongside the date. The NH38 removes the date window entirely for a cleaner dial — popular for dress builds where the symmetry matters. The NH34 is a GMT movement with a fourth hand that tracks a second time zone. Solid vs. skeleton: If you want a traditional watch face with printed or applied indices, use an NH35, NH36, or NH38 with a solid dial. If you want the mechanical movement visible through the dial, use an NH70, NH71, or NH72 with a skeleton dial. The visual difference is dramatic: skeleton builds show spinning gears, the balance wheel, and the decorative bridge finishing in real time. Skeleton bridge color: The NH70 has silver-toned bridges for a clean, me