Seiko Cal. 0731 - 181

The Seiko 0731-181 represents an important milestone in Seiko's 1996 lineup. Powered by the 0731 caliber with 26j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-0802215aed18]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1996

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