Seiko Cal. 5630 - 777

The Seiko 5630-777 represents an important milestone in Seiko's 1976 lineup. Powered by the 5630 caliber with 27j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-01b9b209cfe6]

Also known as: World Timer, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1976

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