Seiko Cal. 6691 - 893

The 6691-893 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6691 caliber with 23j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-aa00257ebb7c]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1975

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