Seiko Cal. 6387 - 678

Released in 1975, the Cal. 6387 with design code 678 was part of Seiko's domestic market collection. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-950de96df510]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1975

Related Models

• Seiko 4515-467
• Seiko 6176-531
• Seiko 6168-108
• Seiko 6284-325
• Seiko 5617-404
• Seiko 6311-363
• Seiko 7135-173
• Seiko 6667-557
• Seiko 3887-467
• Seiko 6688-607
• Seiko 3830-869
• Seiko 6260-126