Seiko Cal. 3827 - 307

This Hand-Winding model from 1971 features a 42mm Gold-Plated case. It features a Green dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-e27bd7fb8ef2]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1971

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