Seiko Cal. 6140 - 368

This Spring Drive model from 1967 features a 36mm PVD Black case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-06348cf903f3]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1967

Related Models

• Seiko 5257-999
• Seiko 6659-130
• Seiko 6136-780
• Seiko 3899-115
• Seiko 6189-438
• Seiko 5235-673
• Seiko 6325-966
• Seiko 7092-381
• Seiko 6151-556
• Seiko 4548-631
• Seiko 7029-247
• Seiko 3866-240