Seiko Prospex “Captain Willard” Ice Diver SPB263 Automatic Cal. 6R35 – Glacier Blue Dial, 42.7 mm, Sapphire Crystal, 200 m

• Seiko 6R35 in-house automatic movement with a 70-hour power reserve, manual winding, and hacking seconds.
• Textured dial with a three-dimensional pattern in a light glacier blue hue (“Ice Diver”), inspired by the ice formations of Arctic expeditions.
• Iconic “Captain Willard” asymmetrical case with integrated crown protection at the 4 o’clock position and a modest lug-to-lug width of just 46.6 mm.
• Stainless steel case and bracelet treated with a super-hard coating for superior scratch resistance.
• Curved sapphire crystal with an anti-reflective coating on the inner surface for glare-free readability from any angle.
• Unidirectional rotating bezel with 120 clicks for monitoring dive times, featuring a LumiBrite luminous marker at 12 o’clock.
• Professional Diver’s 200M (20 bar / 20 ATM) certification suitable for scuba diving, supported by a fully screw-down crown and case back.
• Oversized applied hands and hour markers with a generous coating of high-intensity LumiBrite that glows for a long time in the dark.
• Solid steel bracelet with a triple-fold safety deployant clasp, side pushers, and an integrated wetsuit extension.

The Seiko Prospex SPB263 reinterprets the legendary 1970s dive watch—famous for its durability on extreme expeditions and nicknamed “Captain Willard” by collectors. This special “Ice Diver” edition pays tribute to the brand’s polar explorations through a light blue textured dial that evokes ancient ice, combining significant historical value with contemporary technical specifications.

Its 42.7 mm steel case stands out for its distinctive fluid design with a crown guard at the 4 o’clock position. Despite its imposing presence on the wrist, its short lug-to-lug length of 46.6 mm provides an extremely ergonomic and comfortable fit. Both the case and the bracelet feature a hardening surface treatment that protects the polished and satin-finished surfaces from continuous wear.

Inside beats the high-end Seiko 6R35 caliber, a 24-jewel automatic movement offering a power reserve of up to 70 continuous hours. With water resistance tested to a depth of 200 meters, high-purity sapphire crystal, and robust marine construction, it is a timepiece designed for both demanding diving and the most rigorous daily use.

Detailed Specifications
Brand / Collection: Seiko / Prospex (“Captain Willard” Ice Diver)
Reference: SPB263
Movement: Automatic with manual winding (Seiko Caliber 6R35)
Power Reserve Approx. 70 hours
Frequency / Jewels 21,600 vibrations per hour (3 Hz), 24 jewels
Functions Hours, minutes, seconds, seconds stop, and date at 3 o’clock
Case Material Stainless steel with super-hard coating
Case Diameter: 42.7 mm
Case Thickness: 13.2 mm
Length (lug-to-lug): 46.6 mm
Lug Width: 20.0 mm
Crystal: Sapphire with anti-reflective coating on the inner surface
Bezel: Unidirectional rotating bezel with 120 positions and LumiBrite marker
Crown / Case Back: Screw-down crown and screw-down solid case back
Dial Color: Textured glacier blue with LumiBrite hands and hour markers
Bracelet: Solid stainless steel with super-hard coating and diving extension
Water Resistance: 200 m / 20 bar (Diver’s 200 m / suitable for scuba diving)