Seiko Cal. 6659 - 639

Released in 1979, the Cal. 6659 with design code 639 was part of Seiko's domestic market collection. It features a White dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-682076ae0bfa]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1979

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