Seiko Cal. 6687 - 411

This Automatic model from 1975 features a 42mm PVD Black case. It features a Cream dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-300f14f8bb0d]

Also known as: Helmet, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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