Seiko Cal. 6617 - 931

This Hand-Winding model from 1987 features a 40mm Gold-Plated case. Powered by the 6617 caliber with 31j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-d07aa3fceb1a]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1987

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