All original Seiko chronograph 6139-6012. Well known automatic movement Seiko 6139. Watch is fully serviced. Every function of the watch works perfect. All parts including dial are original.
The Seiko 6139 movement is a mechanical automatic chronograph movement that was first introduced by Seiko in 1969. It is widely regarded as a significant milestone in Seiko's history, as it was their first chronograph movement and one of the first automatic chronograph movements ever produced.
The Seiko 6139 movement features a column-wheel design, which is a type of chronograph mechanism that is known for its smooth operation and precise timing. It has a 17-jewel construction, which means it has 17 synthetic gemstones strategically placed at various points within the movement to reduce friction and enhance durability. The movement also has a quick-set day and date function, allowing for easy adjustment of the calendar display.
The Seiko 6139 movement operates at a frequency of 21,600 vibrations per hour (vph) and has a power reserve of approximately 45 hours. It uses a vertical clutch system, which means that the chronograph can be engaged without causing any additional wear on the movement.
Seiko Chronograph 6139-6012
At Vntage Watch Studio, we strive to ensure your satisfaction with your purchases. If for any reason you are not entirely satisfied, you may return any unused item within 14 days of purchase. Please keep in mind that the cost of returning the item is the responsibility of the purchaser. For added security, we recommend using a trackable service and retaining proof of postage. If returning a watch, it must be properly packaged and insured during transit to protect against damage or loss. Thank you for your understanding.
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