Seiko Cal. 3897 - 309

The 3897-309 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-bcfaf7ea7f7e]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1973

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