Seiko Cal. 7187 - 313

The Seiko 7187-313 represents an important milestone in Seiko's 1976 lineup. Powered by the 7187 caliber with 31j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-3888f6e05161]

Also known as: Sumo, Pogue

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1976

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