Seiko Cal. 6687 - 571

Seiko 6687-571

The 6687-571 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-ec2ec3a5d03d]

Also known as: Bullhead, Arnie

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
34mm
Case Thickness
15.8mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
30m
Dial Color
Black
Jewels
23j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1984

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