Seiko Cal. 7031 - 739

Seiko 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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