Seiko’s 2026 King Seiko VANAC releases comprise three titanium watches—HKF001, HKF002 and HKF003—and a separate stainless-steel limited edition, HKF004. All four use Seiko’s automatic Caliber 8L45 and share a 41.0 mm case diameter, 14.3 mm thickness and stated 72-hour power reserve. Seiko announced availability from July 2026; that timing does not confirm stock at any particular retailer.
What is new in the King Seiko VANAC line?
Seiko traces the VANAC series to 1972. For the 2026 releases, the company says it has carried the original series’ spirit into a modern mechanical watch with angular, bezel-less styling. The lineup covered by Seiko’s release announcements has two parts: three continuous-production titanium models and one 145th-anniversary limited edition in stainless steel.
The design uses a horizontal stripe pattern on the dial, an embedded index ring and a bracelet with mirror and hairline finishes. Seiko describes its design theme as the Tokyo horizon. The see-through case back is, according to Seiko, the first fitted to a King Seiko watch since the collection’s 2022 relaunch. Seiko’s U.S. King Seiko VANAC collection page shows the collection design and lineup.
Which models are included, and how do they differ?
| Model | Material and dial | Production status and announced channel | Published price |
|---|---|---|---|
| HKF001 | Titanium case and bracelet; purple dial | Continuous production; Seiko announced availability from July 2026 at select Seiko Luxe retailers nationwide in the U.S. | $3,850 U.S. recommended retail price per watch in Seiko’s March 18, 2026 announcement |
| HKF002 | Titanium case and bracelet; gray dial | Continuous production; Seiko announced availability from July 2026 at select Seiko Luxe retailers nationwide in the U.S. | $3,850 U.S. recommended retail price per watch in Seiko’s March 18, 2026 announcement |
| HKF003 | Titanium case and bracelet; black dial | Continuous production; Seiko announced availability from July 2026 at select Seiko Luxe retailers nationwide in the U.S. | $3,850 U.S. recommended retail price per watch in Seiko’s March 18, 2026 announcement |
| HKF004 | Stainless-steel case and bracelet; silver-white dial with blue accents | Seiko 145th-anniversary limited edition of 800; announced for July 2026 at Seiko Boutiques and select retail partners worldwide | €3,400 European recommended retail price in Seiko’s May 19, 2026 announcement |
Prices are market-specific recommended prices, not a direct currency comparison. Seiko’s U.S. collection page currently lists $3,850 for HKF001–HKF003 and $3,300 for HKF004; the May announcement gives HKF004’s European recommended price as €3,400. Seiko says specifications and prices may change. The March 18, 2026 U.S. titanium release, the May 19, 2026 HKF004 announcement and the U.S. collection page are the relevant references for those figures.
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- KHAKI GREEN DIAL: this rugged sports watch features a khaki green dial patterned to mirror the shape of the bezel’s edge, with Lumibrite dial indicator hands and markers for low light and a magnified day/date calendar
- BLACK BEZEL: this versatile men’s watch features a black ceramic unidirectional bezel with distinctive scalloped edging, for elapsed timing
- AUTOMATIC & MANUAL: SRPE05 automatic watches for men power up with your natural movements, and feature the ability to wind manually, with 41 hours of reserve power
- WATER-RESISTANT: these rugged stainless steel dive watches for men feature a khaki green silicon strap, and are both stylish and robust, following ISO standards for scuba, and are water-resistant to 200 meters
- 4R36 CALIBER: equipped with the reliable 4R36 caliber, these precise men’s wrist watches ensure the most accurate timekeeping
Seiko’s U.S. lineup also lists HKF005 as a new model, but the cited release announcements do not establish its material, release timing, specifications or price. It is not possible to make a reliable comparison for that model from those announcements.
What specifications do the four announced watches share?
Seiko lists the following core specifications for HKF001–HKF004. These are manufacturer-published figures; the release materials do not report independent testing.
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- STUNNING BLUE DIAL: this automatic men's watch features a deep blue, pressed pattern and gloss finish surrounded by a stainless steel watch case
- AUTOMATIC: these self-winding, automatic men's watches are powered by your movement, with a power reserve of 41 hours
- STAINLESS STEEL: features a durable stainless steel watch case and bracelet with see through caseback
- WATER-RESISTANT: these men's wrist watches are water-resistant down to 50 meters
- 4R35 CALIBER: equipped with the reliable caliber 4R35 automatic movement, this accurate men's watch keeps precise time
- Movement: Automatic Caliber 8L45, with 35 jewels and a frequency of 28,800 vibrations per hour (4 Hz).
- Power reserve: Approximately 72 hours, according to Seiko.
- Case dimensions: 41.0 mm in diameter and 14.3 mm thick.
- Crystal: Box-shaped sapphire crystal with an anti-reflective coating on the inner surface.
- Case back: See-through screw case back.
- Water resistance: 10 bar.
- Magnetic resistance: 4,800 A/m.
- Movement accuracy: Seiko gives a stated range of +10 to -5 seconds per day in both announcements.
HKF001–HKF003 have titanium cases and bracelets and a three-fold clasp with push-button release. HKF004 uses stainless steel and has a screw-down crown. Seiko calls Caliber 8L45 its “premier mechanical movement”; that is the company’s characterization, not an independent assessment. Specifications for the titanium watches are in Seiko’s March announcement; HKF004’s figures are in its May announcement.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What does the titanium option change?
Seiko says titanium is approximately 40% lighter than stainless steel. That makes the material the most significant practical distinction between the trio and HKF004, though the release materials do not give a weight in grams for any model. The titanium watches also differ from HKF004 in dial colors, clasp details and production status: the trio are continuous-production models, while HKF004 is limited to 800 pieces.
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- Gold-tone bracelet watch with exhibition back featuring patterned dial and day/date window
- 37 mm stainless steel case with Hardlex dial window
- Automatic self-wind movement with analog display
- Gold-tone stainless steel bracelet with fold-over clasp
- Water resistant to 30 m (99 ft): In general, withstands splashes or brief immersion in water, but not suitable for swimming.
The design, movement and stated case dimensions remain broadly shared across the announced models, so the choice is primarily between the titanium trio’s lower-weight material and dial options, and HKF004’s stainless-steel construction, blue-accented dial and limited-edition status. Seiko’s titanium model page describes the titanium construction.
When are the new VANAC watches expected, and where?
Seiko announced the titanium models for availability from July 2026 at select Seiko Luxe retailers nationwide in the United States. For HKF004, Seiko announced July 2026 availability through Seiko Boutiques and select retail partners worldwide. These are release plans announced by Seiko, not confirmation that any particular retailer currently has a model in stock.
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