Seiko Cal. 7138 - 934

The Seiko 7138-934 represents an important milestone in Seiko's 1990 lineup. Powered by the 7138 caliber with 27j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-b9813bc560d1]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1990

Related Models

• Seiko 7050-759
• Seiko 6126-888
• Seiko 6386-357
• Seiko 6310-745
• Seiko 6359-844
• Seiko 7059-491
• Seiko 5261-385
• Seiko 5688-934
• Seiko 4419-508
• Seiko 4576-853
• Seiko 7147-792
• Seiko 7152-935