Seiko Cal. 6638 - 460

Seiko 6638-460

This Spring Drive model from 1995 features a 38mm Titanium case. Powered by the 6638 caliber with 27j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-0ca0b18f09c3]

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
38mm
Case Thickness
12.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1995

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