Seiko Cal. 6639 - 940

The Seiko 6639-940 represents an important milestone in Seiko's 1985 lineup. It features a Burgundy dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-9e2a6013a7cd]

Also known as: Tuna, Helmet

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1985

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