Seiko Cal. 7188 - 234

The Seiko 7188-234 represents an important milestone in Seiko's 1987 lineup. Powered by the 7188 caliber with 20j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-4e0bf359b5e5]

Also known as: Monster, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1987

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