Seiko Cal. 3860 - 853

The Seiko 3860-853 represents an important milestone in Seiko's 1965 lineup. Powered by the 3860 caliber with 20j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-18169ea7f40f]

Also known as: Tuna, World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1965

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