Seiko Cal. 6310 - 840

This Hand-Winding model from 1989 features a 40mm Hardlex-Coated Steel case. It features a White dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-4b9cba035887]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1989

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