Seiko Cal. 6638 - 444

Seiko 6638-444

The 6638-444 is a sought-after Automatic piece from Seiko's golden era. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-4ccf237ecdfe]

Also known as: Rally, Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
8.9mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
140m
Dial Color
Champagne
Jewels
32j
Frequency
21,600 bph
Power Reserve
44 hours
Year
1991

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