Seiko Cal. 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

Related Models

• Seiko 4490-746
• Seiko 6334-683
• Seiko 4467-747
• Seiko 6656-271
• Seiko 5227-149
• Seiko 6145-839
• Seiko 6188-350
• Seiko 4495-604
• Seiko 4412-673
• Seiko 4580-256
• Seiko 4452-934
• Seiko 7163-616