Seiko Cal. 6640 - 851

The Seiko 6640-851 represents an important milestone in Seiko's 1999 lineup. It features a Cream dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-7f12c0c8bbe4]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1999

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