Seiko Cal. 6646 - 433

Released in 1976, the Cal. 6646 with design code 433 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-a6a0e79dd816]

Also known as: Rally, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

31j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1976

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