Seiko Cal. 6361 - 400

This Spring Drive model from 1977 features a 40mm Hardlex-Coated Steel case. It features a Black dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-43cefdbbbc4d]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1977

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