Seiko Cal. 3858 - 905

The Seiko 3858-905 represents an important milestone in Seiko's 1975 lineup. Powered by the 3858 caliber with 30j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-b582539ce4de]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1975

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