Seiko Cal. 6640 - 885

This Quartz model from 1988 features a 37mm Stainless Steel case. Powered by the 6640 caliber with 18j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-58acc99911c3]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1988

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