Seiko Cal. 6387 - 404

This Hand-Winding model from 1976 features a 36mm Titanium case. Powered by the 6387 caliber with 35j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-dd5a877d11c0]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1976

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