Seiko Cal. 6639 - 196

The Seiko 6639-196 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-4afc2bcc7a3a]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1981

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