Seiko Cal. 5645 - 976

This Spring Drive model from 1966 features a 45mm PVD Black case. Powered by the 5645 caliber with 19j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-08cafabd8348]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1966

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