Seiko Cal. 7139 - 834

This Spring Drive model from 1976 features a 40mm Hardlex-Coated Steel case. Powered by the 7139 caliber with 23j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-be012a401c2d]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1976

Related Models

• Seiko 3824-563
• Seiko 0720-966
• Seiko 6161-463
• Seiko 4517-483
• Seiko 6167-264
• Seiko 5295-614
• Seiko 4526-191
• Seiko 7095-962
• Seiko 7030-215
• Seiko 6154-137
• Seiko 4587-196
• Seiko 4566-614