Seiko Cal. 5630 - 817

The Seiko 5630-817 represents an important milestone in Seiko's 1991 lineup. Powered by the 5630 caliber with 28j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-07c7924d4bb7]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1991

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