Seiko Cal. 7187 - 138

The 7187-138 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7187 caliber with 34j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-cf869cceb1eb]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1983

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