Seiko Cal. 6388 - 410

This Solar model from 1977 features a 42mm PVD Black case. Powered by the 6388 caliber with 24j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-be3adfa87f72]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1977

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