Seiko Cal. 3863 - 877

The Seiko 3863-877 represents an important milestone in Seiko's 1969 lineup. Powered by the 3863 caliber with 35j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-4091dae228a4]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

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