Seiko Prospex Automatic Men's Watch SPB257J1 Limited Edition Black Series

Prospex Diver's Automatic: SPB257J1 in black, 6R35, 200 m

Collection

The Seiko SPB257J1 belongs to the Prospex collection, Seiko's technical range dedicated to outdoor and water activities. Water-resistant to 200 m, equipped with the 6R35 caliber with a 70-hour power reserve, it meets the demands of divers and athletes who do not want to sacrifice robustness for aesthetics.

Case

The case of the Seiko SPB257J1 is made of stainless steel, with a diameter of 44.3 mm and a thickness of 13.4 mm. The unidirectional rotating bezel allows for precise measurement of dive times. The black dial is protected by a sapphire crystal, the most scratch-resistant, with anti-reflective coating. The case back is solid screw-down. The water resistance is 200 m, compliant with ISO 6425 diving standards. The indexes and hands are coated with LumiBrite, Seiko's luminescent material for extended night visibility. The case benefits from a Dia-Shield treatment (super-hard coating) which improves its scratch resistance.

Movement

The Seiko SPB257J1 is powered by the 6R35 automatic caliber, offering a power reserve of approximately 70 hours. The 6R caliber is the high-end of Seiko's production automatic movements: it features hacking and manual winding, and offers a significantly longer power reserve than 4R calibers.

Strap

The Seiko SPB257J1 is equipped with a NATO-style nylon strap, light and breathable, ideal for sports use, fastened by a classic and easy-to-adjust pin buckle. The lug width is 20 mm.

Supplied with: Storage box, presentation pad, user manual.