Seiko Cal. 6630 - 230

This Spring Drive model from 1984 features a 39mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-58ea9c053bbf]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1984

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