Seiko Cal. 3887 - 999

The Seiko 3887-999 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-da0c93f33f89]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1971

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