Seiko Cal. 5256 - 402

Seiko 5256-402

The 5256-402 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5256 caliber with 17j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-dd0e09cae270]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
35mm
Case Thickness
14.0mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
150m
Dial Color
Navy
Jewels
17j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1980

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