Seiko Cal. 6656 - 405

This Spring Drive model from 1993 features a 36mm Titanium case. Powered by the 6656 caliber with 31j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-c0d6400c545f]

Also known as: Bellmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1993

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