Seiko Cal. 6639 - 783

The Seiko 6639-783 represents an important milestone in Seiko's 1987 lineup. It features a Champagne dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-90d8db554172]

Also known as: Tuna, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1987

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