Seiko Cal. 7187 - 436

This Hand-Winding model from 1990 features a 44mm Two-Tone case. Powered by the 7187 caliber with 34j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-5f52837861b6]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1990

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