Seiko NH34A Automatic GMT Movement

Description

TMI Japanese Made NH34A

The NH34A is a robust, date-only automatic movement engineered for both reliability and ease of use. Its compact dimensions make it compatible with a wide range of modern watch cases, while its combination of automatic winding, manual-wind capability, and quick-set date function ensures versatility for watchmakers and hobbyists alike.

Technical Specifications

Installation Requirements

Ensure you have the following tools on hand before fitting the NH34A:

• case-back opener
• movement holder
• hand-press

The NH34A’s standard 1.00 mm hour-wheel cannon pinion and 0.20 mm hole sizes for hour, minute, and second hands allow seamless compatibility with most aftermarket hands and dials. Stem length is factory (standard), but may be trimmed for custom case depths. Each NH34A movement ships unencased, and freshly oiled, and should be secured under a dust-proof double-layer movement cover until fitted.

Date Wheel and Dial Positions

The NH34A ships fitted with a 3 o’clock date wheel, compatible with common crown positions at 3.0, 3.8, and 4.1 o’clock. If your case places the crown elsewhere, simply swap in the appropriately positioned date wheel for perfect alignment.

Specifics

Customer Reviews