Seiko Cal. 5251 - 331

The Seiko 5251-331 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-d64cdb2ecdef]

Also known as: Panda, Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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