Seiko Cal. 6646 - 837

Seiko 6646-837

The Seiko 6646-837 represents an important milestone in Seiko's 1991 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-b0d02c18cf38]

Also known as: Tuna, UFO

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
36mm
Case Thickness
9.7mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Champagne
Jewels
34j
Frequency
21,600 bph
Power Reserve
55 hours
Year
1991

Related Models

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