Seiko Cal. 7031 - 739

The Seiko 7031-739 represents an important milestone in Seiko's 1989 lineup. Powered by the 7031 caliber with 35j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-1ffd69a7e802]

Also known as: Helmet, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1989

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