Seiko Cal. 5687 - 766

The 5687-766 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-816d023b14c3]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1978

Related Models

• Seiko 7098-361
• Seiko 0793-701
• Seiko 4538-862
• Seiko 4582-565
• Seiko 6353-338
• Seiko 4534-571
• Seiko 7041-403
• Seiko 6614-723
• Seiko 6645-950
• Seiko 6163-730
• Seiko 7071-700
• Seiko 3833-626