Seiko Cal. 3838 - 631

This Hand-Winding model from 1984 features a 35mm PVD Black case. Powered by the 3838 caliber with 28j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-d510d01cd447]

Also known as: Bullhead, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1984

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