Seiko Cal. 7031 - 417

This Hand-Winding model from 1975 features a 42mm Hardlex-Coated Steel case. Powered by the 7031 caliber with 20j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-9ed04ec8a1b0]

Also known as: Monster, Panda

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1975

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