Seiko Cal. 7031 - 257

The Seiko 7031-257 represents an important milestone in Seiko's 1996 lineup. It features a Black dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-9274a0612013]

Also known as: Bullhead, Helmet

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1996

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