Seiko Cal. 6643 - 763

Seiko 6643-763

The 6643-763 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-75fd385acc86]

Also known as: UFO, Rally

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
41mm
Case Thickness
11.5mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1973

Related Models

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