Seiko Cal. 5634 - 887

The Seiko 5634-887 represents an important milestone in Seiko's 1984 lineup. Powered by the 5634 caliber with 27j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-e8319bac2de2]

Also known as: Crown, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

46mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1984

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