Seiko Cal. 6691 - 566

Seiko 6691-566

Released in 1974, the Cal. 6691 with design code 566 was part of Seiko's domestic market collection. It features a Cream dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-c37f8052f684]

Also known as: Bullhead, World Timer

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
44mm
Case Thickness
8.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
50m
Dial Color
Cream
Jewels
33j
Frequency
21,600 bph
Power Reserve
51 hours
Year
1974

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