Seiko Cal. 6685 - 594

The Seiko 6685-594 represents an important milestone in Seiko's 1977 lineup. With its 18mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-24198a4491c5]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1977

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