Seiko Cal. 5663 - 357

The Seiko 5663-357 represents an important milestone in Seiko's 1967 lineup. Powered by the 5663 caliber with 20j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-54c475d9bf06]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1967

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