Seiko Cal. 5691 - 378

The Seiko 5691-378 represents an important milestone in Seiko's 1998 lineup. Powered by the 5691 caliber with 24j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-4500f0f12b49]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1998

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