Seiko Cal. 6643 - 176

Released in 1989, the Cal. 6643 with design code 176 was part of Seiko's domestic market collection. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-8627be3325ac]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1989

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