Seiko Brand 100th Anniversary
Seiko Prospex 1965 Heritage Diver’s Special Edition

This special edition features gold-colored accents that celebrate the anniversary year while calling to mind the many watchmaking advances that have been brought forth under the Seiko name.

More power, greater water resistance, and enhanced legibility
Each watch is powered by one of Seiko’s latest in-house automatic movements, Caliber 6R55, which has a power reserve of 72 hours. The watches are further enhanced to ensure water resistance to 300 meters, a first for Prospex non-saturation diver’s watches. The date window has been moved to the space between four and five o’clock to allow for a more symmetrical design and more space to be filled with Lumibrite, ensuring high legibility even in dark conditions.

A compact construction designed for comfort
The reliability, safety, and ease of use required of a Seiko diver's watch are all provided for in the new, more compact design. With a case diameter of 40.0mm, a lug-to-lug length of 46.4mm, and a thickness of 13.0mm, the watch’s compact dimensions offer excellent wearability for everyday use. A new bracelet with shorter links and a smaller clasp allows the watch to conform to the wearer's wrist and provides a new level of comfort. The shorter lugs also ensure a high degree of wearability.

Caliber Number: 6R55
Movement Type: Automatic with manual winding
Precision: +25 to -15 seconds per day
Power reserve: Approx. 72 hours(3 days)
Jewels: 24

Functions:
- Stop second hand function

Case Material: Stainless steel
Case Size:
- Thickness: 13.0mm
- Diameter: 40.0mm
- Lug-to-lug: 46.4mm

Crystal: Curved sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
LumiBrite: LumiBrite on hands, index(es) and bezel
Clasp: Three-fold clasp with secure lock , push button release with extender
Distance between lugs: 20

Water Resistance: 300m / 1000ft diver's
Magnetic Resistance: 4,800 A/m
Weight: 168.0g

Features:
- Unidirectional rotating bezel
- Screw-down crown
- Three-fold clasp with secure lock and extender
- Screw case back