Seiko Cal. 7031 - 904

The Seiko 7031-904 represents an important milestone in Seiko's 1989 lineup. It features a Silver dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-fdda36b631a8]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1989

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