Seiko Cal. 6378 - 305

This Hand-Winding model from 1983 features a 35mm Two-Tone case. Powered by the 6378 caliber with 31j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-e9ea452610cc]

Also known as: Monster, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1983

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