Seiko Cal. 6390 - 856

This Hand-Winding model from 1981 features a 36mm Hardlex-Coated Steel case. Powered by the 6390 caliber with 25j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-8efc4a1442c6]

Also known as: Samurai, Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1981

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