Seiko Cal. 6355 - 840

This Hand-Winding model from 1975 features a 41mm Stainless Steel case. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f212ede8009b]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1975

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