Seiko Cal. 6139 - 274

The Seiko 6139-274 represents an important milestone in Seiko's 1974 lineup. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-470660642506]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1974

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