Seiko Cal. 3852 - 639

The 3852-639 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3852 caliber with 31j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-336501d23eb8]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1970

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