Seiko Cal. 3884 - 667

Released in 1977, the Cal. 3884 with design code 667 was part of Seiko's domestic market collection. Powered by the 3884 caliber with 25j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-01f2fb6eaa66]

Also known as: UFO, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1977

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