Seiko Cal. 6140 - 840

The Seiko 6140-840 represents an important milestone in Seiko's 1965 lineup. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-69e1bd6cbcb5]

Also known as: Monster, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1965

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