Seiko Cal. 5681 - 156

The Seiko 5681-156 represents an important milestone in Seiko's 1999 lineup. Powered by the 5681 caliber with 28j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-da344f7bf29c]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1999

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