Seiko Cal. 3853 - 643

The Seiko 3853-643 represents an important milestone in Seiko's 1978 lineup. Powered by the 3853 caliber with 22j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-29283ddc8d0c]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1978

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