Seiko Cal. 7187 - 740

The Seiko 7187-740 represents an important milestone in Seiko's 1983 lineup. Powered by the 7187 caliber with 22j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-bcc2fb8971bd]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1983

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