Seiko Cal. 3881 - 727

The 3881-727 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3881 caliber with 36j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-7a20dcff687c]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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