Seiko Cal. 6230 - 364

This Hand-Winding model from 1978 features a 37mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-46bfefa5be6f]

Also known as: Helmet, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1978

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