Seiko Cal. 3850 - 639

The Seiko 3850-639 represents an important milestone in Seiko's 1967 lineup. Powered by the 3850 caliber with 27j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-7dbb9f31eefd]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1967

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