Seiko Cal. 5227 - 640

This Spring Drive model from 1968 features a 43mm PVD Black case. Powered by the 5227 caliber with 21j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-8038e1e1af30]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

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