Seiko Cal. 6139 - 644

The Seiko 6139-644 represents an important milestone in Seiko's 1981 lineup. Powered by the 6139 caliber with 27j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-0e1723eec290]

Also known as: Sea Horse

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

27j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1981

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