Seiko Cal. 3831 - 990

The Seiko 3831-990 represents an important milestone in Seiko's 1982 lineup. Powered by the 3831 caliber with 20j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-d7046773a628]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1982

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