Seiko Cal. 6690 - 998

This Automatic model from 1977 features a 38mm Titanium case. Powered by the 6690 caliber with 32j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-92b0765e651a]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1977

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