Seiko Cal. 6643 - 977

Seiko 6643-977

The 6643-977 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-caa7b28b470f]

Also known as: Turtle, Goldfeather

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
45mm
Case Thickness
11.9mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Black
Jewels
35j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1999

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