Seiko Cal. 6387 - 275

The Seiko 6387-275 represents an important milestone in Seiko's 1989 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-264ca84d8c39]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1989

Related Models

• Seiko 7154-632
• Seiko 6643-928
• Seiko 7169-762
• Seiko 6615-942
• Seiko 4577-215
• Seiko 4569-135
• Seiko 6322-650
• Seiko 7198-477
• Seiko 3870-299
• Seiko 4531-666
• Seiko 0751-412
• Seiko 6256-153