Seiko Cal. 3860 - 427

The Seiko 3860-427 represents an important milestone in Seiko's 1966 lineup. Powered by the 3860 caliber with 33j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-cbd7795c3165]

Also known as: Monster, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1966

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