Seiko Cal. 4415 - 639

Seiko 4415-639

The 4415-639 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4415 caliber with 19j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-d7394dad4f65]

Also known as: Tuna, Navigator

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
37mm
Case Thickness
13.0mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
150m
Dial Color
Black
Jewels
19j
Frequency
36,000 bph
Power Reserve
36 hours
Year
1998

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