Seiko Cal. 6639 - 408

This Quartz model from 1996 features a 46mm PVD Black case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-e5d86c79f3a7]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1996

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