Seiko Cal. 7139 - 186

The Seiko 7139-186 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-144e6876638f]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1977

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