The NH35 automatic movement is a highly regarded mechanical caliber known for its reliability, durability, and versatility. Manufactured by Seiko Instruments Inc. (SII), it is widely used by both established and independent watch brands.

Operating at 21,600 vibrations per hour (3 Hz) with 24 jewels, it offers a power reserve of approximately 41 hours.

The NH34 automatic movement builds upon the legendary reliability of the NH35, adding a highly sought-after GMT complication. Manufactured by Seiko Instruments Inc. (SII), it allows wearers to track multiple time zones simultaneously.

Operating at 21,600 vibrations per hour (3 Hz) with 24 jewels, it features a self-winding mechanism, manual winding, and hacking seconds.

The VK63 mecha-quartz movement combines the pinpoint accuracy of quartz timekeeping with the tactile feel of a mechanical chronograph. Developed by Seiko Instruments Inc. (SII), it represents the best of both worlds.

While the main timekeeping is driven by a highly accurate quartz oscillator, the chronograph module is entirely mechanical, giving you a smooth sweeping seconds hand.