Seiko Cal. 6643 - 821

Seiko 6643-821

The 6643-821 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-d808cf458f32]

Also known as: Flighty

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
150m
Dial Color
Champagne
Jewels
17j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1990

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