Seiko Cal. 6656 - 340

The Seiko 6656-340 represents an important milestone in Seiko's 1987 lineup. It features a White dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-c23162d366f0]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1987

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