Seiko Cal. 6140 - 437

This Spring Drive model from 1977 features a 38mm Gold-Plated case. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-f7536a747349]

Also known as: Rally, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

26j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1977

Related Models

• Seiko 0733-284
• Seiko 0742-293
• Seiko 6297-384
• Seiko 6274-975
• Seiko 5613-567
• Seiko 4536-301
• Seiko 4512-562
• Seiko 6127-761
• Seiko 7197-714
• Seiko 4498-676
• Seiko 4555-641
• Seiko 6645-604