Seiko Cal. 7139 - 166

The Seiko 7139-166 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-38ad145ca937]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1971

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