Seiko Cal. 6628 - 137

This Quartz model from 1988 features a 38mm Hardlex-Coated Steel case. Powered by the 6628 caliber with 31j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-531fbc47c519]

Also known as: Monster, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1988

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