Seiko Cal. 0727 - 549

This Spring Drive model from 1977 features a 45mm PVD Black case. Powered by the 0727 caliber with 33j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-93854ed3cf38]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1977

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