Seiko Cal. 0739 - 257

Seiko 0739-257

The 0739-257 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 0739 caliber with 35j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-85256a27e202]

Also known as: Sumo

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
37mm
Case Thickness
15.6mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Navy
Jewels
35j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1968

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