Seiko Cal. 6646 - 650

The Seiko 6646-650 represents an important milestone in Seiko's 1987 lineup. It features a Silver dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-d19cbb4bcc21]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1987

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