Seiko Cal. 6691 - 597

The Seiko 6691-597 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-c52819353a4b]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1981

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