Seiko Cal. 4560 - 645

The Seiko 4560-645 represents an important milestone in Seiko's 1980 lineup. Powered by the 4560 caliber with 27j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-7cc8be963d9d]

Also known as: Tuna, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1980

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