Seiko Cal. 5257 - 256

The Seiko 5257-256 represents an important milestone in Seiko's 1989 lineup. It features a Green dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-62379ab992b0]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1989

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