Seiko Cal. 7138 - 240

This Automatic model from 1982 features a 45mm Two-Tone case. Powered by the 7138 caliber with 30j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-7be0a6861852]

Also known as: Monster, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1982

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