Seiko Cal. 4440 - 612

Released in 1975, the Cal. 4440 with design code 612 was part of Seiko's domestic market collection. Powered by the 4440 caliber with 31j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-dc399c666854]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1975

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