Seiko Cal. 6637 - 816

Seiko 6637-816

Released in 1999, the Cal. 6637 with design code 816 was part of Seiko's domestic market collection. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-d0fb4f2916a6]

Also known as: Turtle, Silverwave

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
14.0mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
120m
Dial Color
Green
Jewels
20j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1999

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