SEIKO 7005-8000 AUTOMATIC Seiko Automatic - Operational Year of Manufacture: This is a Seiko Automatic manufactured in 1979. It features a simple design with bar indices. The movement is Cal. 7005, made at the Kameido factory, and it has a quick-set date function. Cal. 7005 is the foundational caliber that leads to the current Cal. 7526 (used in Seiko 5, Black Monster, etc.). It is an ancestor of mid-range Seiko watches. • Later evolved into 7006, 7009, and 7S26 (modern SEIKO 5). In other words, it is the "progenitor" movement of modern Seiko automatic watches. This model is not just a cheap vintage watch... ① Prototype of Seiko 5 → The starting point of a lineage that continues to this day. ② Simple and durable → Ideal for disassembly and repair. ③ Easy to use for parts swapping → 7005 series has many compatible parts. The SEIKO 7005-8000 is "affordable yet has a genuine mechanism." It's a highly cost-effective piece, considered a "root machine of modern Seiko." Condition: Currently operating well. Calendar: Quick-set date operation by pulling the crown to the first position is smooth. Time Setting: Can be done without issue by pulling the crown to the second position. While the quick-set function is very convenient, operating it when the watch indicates "8 PM to 4 AM" can cause damage to the gears. It has an original crystal with a cyclops lens (over the date) similar to Rolex. The case, crystal, and dial are clean and in good condition for their age. Case width: 36.6mm Thickness: 9.8mm Lug width: 18mm Daily rate: ±1 minute No hand-winding (fully automatic) The daily rate may increase due to usage environment, positional differences, etc. Please consider these figures as reference values only. This item is a vintage, pre-owned product. As many years have passed since its manufacture, please purchase with an understanding of this. Please carefully review the photos and proceed with the transaction only after you are satisfied with the condition. ⚠️ This listing is unrelated to those selling this product with copied comments and photos from other sites (without the actual product). Please note that this is an exclusive listing on Mercari.