Seiko Cal. 3855 - 850

This Hand-Winding model from 1972 features a 41mm Two-Tone case. Powered by the 3855 caliber with 19j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-fa0b99d249a8]

Also known as: Tuna, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1972

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