Seiko Cal. 3858 - 987

The 3858-987 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3858 caliber with 18j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-4ff8867844a5]

Also known as: Monster, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1965

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