Seiko Cal. 7138 - 254

This Automatic model from 1975 features a 42mm Two-Tone case. Powered by the 7138 caliber with 24j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-8b1f2c102561]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1975

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