Seiko Cal. 6638 - 460

Seiko 6638-460

The Seiko 6638-460 represents an important milestone in Seiko's 1966 lineup. Powered by the 6638 caliber with 24j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-ee55be8a3306]

Also known as: Sea Horse, Arnie

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
39mm
Case Thickness
14.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
50m
Dial Color
Burgundy
Jewels
24j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1966

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