Seiko Cal. 6638 - 276

Seiko 6638-276

This Hand-Winding model from 1965 features a 36mm Hardlex-Coated Steel case. Powered by the 6638 caliber with 24j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-c33209c8d5cf]

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
11.8mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
24j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1965

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