Seiko Prospex Automatic Men's Watch SPB255J1 Limited Edition Black Series

Seiko SPB255J1: 44.3 mm automatic diver, 70-hour power reserve, 200 m water resistance

Collection

The Seiko SPB255J1 is part of the Prospex line, the brand's high-end sports range. The Prospex collection has covered diving, altitude, and exploration since the 1960s; this 44.3 mm black model with 200 m water resistance is a modern and accessible representative.

Case

Made of stainless steel, the case of the Seiko SPB255J1 measures 44.3 mm in diameter and 13.4 mm in thickness. The unidirectional rotating bezel allows for precise measurement of dive times. The dial is protected by a sapphire crystal, the most scratch-resistant, with an anti-reflective coating. The case back is solid and screwed down. The water resistance is 200 m, conforming to ISO 6425 diving standards. The indexes and hands are coated with LumiBrite, Seiko's luminescent material for prolonged nocturnal legibility. The case benefits from a Dia-Shield treatment (super-hard coating) which improves its scratch resistance.

Movement

The Seiko SPB255J1 is powered by the automatic caliber 6R35, offering a power reserve of approximately 70 hours. The 6R caliber is the high-end of Seiko's series automatic movements: it features hacking and manual winding, and offers a significantly higher power reserve than 4R calibers.

Strap

The Seiko SPB255J1's NATO-style nylon strap, secured by a pin buckle, consistently complements the case. The lug width is 20 mm.

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