Original Seiko TMI VK64 movement Quartz 2 eys 5 hands Hattori / SII VK Series Japanese vk64 Quartz Movement Date At 6 o'clock
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Original Seiko TMI VK64 movement Quartz 2 eys 5 hands Hattori / SII VK Series Japanese vk64 Quartz Movement Date At 6 o'clock
The Seiko VK64 is a hybrid “Meca-Quartz” chronograph movement, merging the precision of quartz timekeeping with the tactile feel of mechanical operation. The chronograph seconds hand delivers a smooth “sweep” motion (5 ticks per second), while the reset button provides an instantaneous, mechanical-style flyback. This robust caliber offers reliable accuracy and a long battery life, making it a favorite for vintage-inspired tool watches.
Specifications
| Parameter | Detail |
|---|---|
| Manufacturer | Seiko Instruments Inc. |
| Caliber Number | VK64 |
| Type | Meca-Quartz (Hybrid: quartz timekeeping with mechanical chronograph control) |
| Chronograph Function | Bi-compax (two sub-dials): 60-minute counter at 3:00, 24-hour indicator at 9:00 |
| Chronograph Operation | Central seconds hand sweeps at 5 ticks per second; instant mechanical flyback reset |
| Accuracy | ±20 seconds per month |
| Battery | SR920SW |
| Battery Life | Approximately 3 years |
| Diameter | 30.80 mm |
| Thickness | 5.00 mm |
| Hand Stack | Center hour, center minute, center chronograph seconds; sub-dials for chronograph minutes and 24-hour time |
| Jewels | 0 (quartz) / 4 jewels (mechanical chronograph module) |
| Date Function | Yes (VK64); VK64 ND omits the date |






























































































































