Seiko Cal. 6311 - 431

The Seiko 6311-431 represents an important milestone in Seiko's 1965 lineup. It features a White dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-dfdd0ea7141d]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1965

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