Seiko Cal. 3891 - 902

The 3891-902 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3891 caliber with 36j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-cb95172a17db]

Also known as: UFO, Goldfeather

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1991

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