Seiko Cal. 6387 - 254

The Seiko 6387-254 represents an important milestone in Seiko's 1983 lineup. Powered by the 6387 caliber with 30j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-f7a7746d1e69]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1983

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