Seiko Cal. 6139 - 381

The 6139-381 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6139 caliber with 20j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-62aafb9b9f0d]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1995

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