Seiko Cal. 7011 - 439

The 7011-439 is a sought-after Quartz piece from Seiko's golden era. Powered by the 7011 caliber with 31j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-c601781e7028]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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