Seiko Cal. 7138 - 951

This Spring Drive model from 1971 features a 42mm Stainless Steel case. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-8207a216d658]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

Related Models

• Seiko 4419-952
• Seiko 5675-553
• Seiko 6286-767
• Seiko 6623-186
• Seiko 7093-626
• Seiko 5610-810
• Seiko 5650-927
• Seiko 6641-514
• Seiko 7068-107
• Seiko 7179-118
• Seiko 3815-104
• Seiko 7061-148