Seiko Cal. 3899 - 921

The Seiko 3899-921 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-25f28cdb79c3]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1987

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