Seiko Cal. 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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