Seiko Cal. 7181 - 331

This Hand-Winding model from 1969 features a 40mm Gold-Plated case. Powered by the 7181 caliber with 18j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-f36db70a6b06]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1969

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