Seiko Cal. 5687 - 304

This Spring Drive model from 1999 features a 39mm Hardlex-Coated Steel case. Powered by the 5687 caliber with 28j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-23f55f0c34e2]

Also known as: Crown, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1999

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