Seiko Cal. 3844 - 931

Released in 1971, the Cal. 3844 with design code 931 was part of Seiko's domestic market collection. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-88eef008ab27]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1971

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