Seiko Cal. 5645 - 597

The Seiko 5645-597 represents an important milestone in Seiko's 1972 lineup. Powered by the 5645 caliber with 23j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-9b19e17f6602]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1972

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