Seiko Cal. 4417 - 637

Seiko 4417-637

The 4417-637 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4417 caliber with 19j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-6cdd5be4dafe]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
13.1mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
19j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1996

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