Seiko Cal. 7187 - 257

The Seiko 7187-257 represents an important milestone in Seiko's 1970 lineup. Powered by the 7187 caliber with 32j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-e0c9af99990a]

Also known as: Samurai, Monster

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1970

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