Seiko Cal. 6687 - 912

This Automatic model from 1969 features a 42mm Titanium case. Powered by the 6687 caliber with 23j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-14f84feb2176]

Also known as: Helmet, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1969

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