Seiko Cal. 5645 - 307

The Seiko 5645-307 represents an important milestone in Seiko's 1974 lineup. Powered by the 5645 caliber with 22j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-5e5eca89c5c2]

Also known as: Samurai, World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1974

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