Seiko NH71 Automatic Movement
The Seiko NH71 (NH71A) is a 24-jewel automatic movement designed for reliability and smooth performance. Operating at 21,600 bph (3Hz), it delivers accurate timekeeping with a ~41-hour power reserve. This movement supports hacking and hand-winding for precision control, with functions for hours, minutes, and central seconds. A solid choice for watch modding and custom builds.
Unsure of what movement to use? Here's a simple explanation of their differences. You can watch this Video for reference.