Seiko Cal. 7188 - 637

The Seiko 7188-637 represents an important milestone in Seiko's 1972 lineup. It features a Champagne dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-fd3b45bdf78e]

Also known as: Samurai, Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

17j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1972

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