Seiko Cal. 6691 - 363

The Seiko 6691-363 represents an important milestone in Seiko's 1966 lineup. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-6a1ffa0ff957]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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