Seiko Cal. 6138 - 947

This Spring Drive model from 1975 features a 43mm Two-Tone case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-3da40e956a94]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1975

Related Models

• Seiko 7196-446
• Seiko 5688-995
• Seiko 7197-174
• Seiko 6156-987
• Seiko 4547-422
• Seiko 4515-984
• Seiko 4556-191
• Seiko 3838-217
• Seiko 0717-933
• Seiko 4440-164
• Seiko 4484-201
• Seiko 0725-944